Cisco ASA Interim Release Notes

The software images listed below are Interim releases. They contain bug fixes which address specific issues found since the last Feature or Maintenance release. The images are fully supported by Cisco TAC and will remain on the download site only until the next Maintenance release is available.

Version 9.18.4.71 – December 1, 2025

Defects resolved since 9.18.4.68:

CSCvm76755 DP-CP arp-in and adj-absent queues need to be separated
CSCwd73020 Fix Bootup Warning: Counter ID 'TLS13_DOWNSTREAM_CLIENT_CERTIFICATE_VERIFY' is too long
CSCwd92327 on 2k platform, external authentication fails for users starting with number
CSCwi44488 ASA/FTD: Traceback and reload reload in in process 'lina' due to ikev2_find_child_sa_by_local_spi
CSCwj16279 username containing '@' character works for asa login but fails for 'connect fxos'
CSCwj98648 Failure to read the signature keys (mult-instance deployment)
CSCwk07934 Clock skew between FXOS and Lina causes SAML assertion processing failure
CSCwk09488 Incorrect syslog generated on failure to process SGT from ISE during RA authentication
CSCwk14657 Bring back support for portal-access-rule for weblaunch for RAVPN sessions
CSCwk64643 Failover prompt shows state active while the firewall is in Negotiation
CSCwk97677 TPK-MI FTD instance getting validation error and ftds in splitbrain HA post upgrade 7.6.0-1685
CSCwn15505 Observing Lina Core for 2.17 in BS/QP with App Instance Stuck in 'Started' State
CSCwn50760 ASA Traceback after upgrade to 9.20.3.7
CSCwn55890 SAML DNS LB fails to redirect to local host when local-base-url contains uppercase letters
CSCwn57674 fix block loc oper set after free
CSCwn61041 Traceback and reload during clear bgp * ipv6 unicast involving watchdog
CSCwo05712 Serviceability Enhancement - Make FXOS disk errors more descriptive
CSCwo09439 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-3-4280'
CSCwo15715 IKEv2 Rekeys fail due to fragmentation during the IKE Rekey
CSCwo22091 FTD sending "0.0.0.0" NAS-IP-Address attribute when authenticating/authorizing using Radius
CSCwo36485 ASA/FTD traceback and reload in vaccess_nameif_action thread
CSCwo42102 show tech-support fprm detail command is getting stuck for longer duration
CSCwo45497 Counter from IKEV2 stats does not match the number of tunnels in VPN-Sessiondb
CSCwo57740 '${dsk_a} missing or inoperable. Rebooting Blade.' error does not specify missing or inoperable disk
CSCwo72352 Memory leak: ASA Fragment size 72 causing memory exhaustion in MEMPOOL_GLOBAL_SHARED POOL
CSCwo76165 Deployment failure due to rsync
CSCwo76559 ASA/FTD traceback and reload with SNMP Notify Thread seen on 3110
CSCwo87763 ASA/FTD: Primary standby unit becomes Active after reload in HA set up
CSCwo91748 Lina: Traceback in thread name ssh on executing show access-list after ACL deletion
CSCwp13016 FTD/ASA SSH: Terminal monitor is not showing logs
CSCwp22612 Policy deploy failing on FTD when trying to remove Umbrella DNS Configuration
CSCwp25033 An ICMP not reachable storm might cause high CPU on a two units FTD cluster
CSCwp26815 CPU usage by "WebVPN Timer Process" on standby ASA device
CSCwp33077 SAML IdP entityID increase from capped 128 character maximum
CSCwp36133 Clarify the working of Fallthrough to Interface PAT (Destination Interface) as it is not working as expected
CSCwp64615 ASA/FTD: ASP drop capture for 'invalid-ip-length' or 'sp-security-failed' does not work with match criteria
CSCwp66721 Memory leak in SSL crypto causing high Lina memory usage on lower-end devices running FTD 7.7.0
CSCwp90780 Restoring .tgz context file causes allocated interfaces to be removed from 'system' configuration
CSCwp93368 LINA traceback Observed on FTDv Firewalls Deployed in Azure: snp_vxlan_encap_and_send_to_remote_peer
CSCwp97402 WA: Traceback and reload due to lock contention on the tmatch table during deployment with large snmp config
CSCwq07808 FP3105 Traceback and Reload after changing the speed on Ethernet interface
CSCwq16926 Traceback and Reload while two processes attempt to free a TD subnet structure
CSCwq18679 ASA from CSM/CLI - no access-list ACL_name line line_nr remark on last ACL line shows message - "Specified remark does not exist"
CSCwq21101 Invalid host header reveals ASA interface IP address
CSCwq22206 VPN lost during a rekey with 'IKEv2 negotiation aborted due to ERROR: Platform errors'
CSCwq27217 ASA: Traceback and reload on threat detection, interfaces unstable after that
CSCwq29375 ASA/FTD - Assert triggered during FP_PUNT replace (aaa account match)
CSCwq29706 Traceback and reload after editing SNMP config, with tmatch
CSCwq31342 FPR4200 | FPR3100 Multi Instance Chassis Deployment Failed in DNS configuration
CSCwq39942 CVE-2025-32463: sudo: Sudo before 1.9.17p1 allows local users to obtain
CSCwq39943 CVE-2025-32462: sudo: Before 1.9.17p1, allows users to execute commands on unintended machines.
CSCwq40256 Inbound IPsec packets are dropped by IPsec offload when the crypto map ACL is using specific ports.
CSCwq43711 Idle SSH sessions persist beyond the configured timeout without graceful termination by Fin flag
CSCwq46058 ASA SNMP Response Issue - Responses Sent Only for Odd OIDs, Not for Even
CSCwq47622 Lina Traceback and Reload after enabling 'TLS Server Identity Discovery'
CSCwq48842 FTD: Packets Dropped due to tcp-seq-past-win due to delayed packet through Snort
CSCwq50373 ASA/FTD in HA, snmptranslate process during the boot-up causing High CPU and IPC timeouts, causing split-brain.
CSCwq52188 FTD Traceback while executing `asp load-balance per-packet`
CSCwq52255 SSH login to FTD management IP address lands in FXOS shell instead of FTD CLISH due to missing /mnt/boot/application/*.def file
CSCwq54109 FTD 3130 HA Lina tracebacks at ikev2_bin2hex_str
CSCwq70133 Password Expiry Age does not reset after Password Change
CSCwq70773 show asp rule-engine issues with complete and run time
CSCwq74204 IKEv1 L2Lvpn fails in phase 2 with "Rejecting IPsec tunnel: no matching crypto map entry" after upgrade
CSCwq74738 RAVPN SSL/IKEV2 AUTH FAILURE: AAA PROCESS MISHANDLING BROKEN FIBER CLASS
CSCwq74986 FTD: Instance stuck in Boot Loop
CSCwq78991 Firewall joins a cluster although gets incomplete ACL policy rules during replication
CSCwq82225 Drop counter doesn't increment for embryonic related drops in 'show service policy'
CSCwq90072 ASDM Parsing Failure on Two Contexts
CSCwq92728 ASA client IP missing from TACACS+ authorization request in SSH
CSCwq95241 Reboots on FP2130 due to missing heimdall PID
CSCwq95810 "no http server basic-auth-client ASDM" allows ASDM connections to ASA.
CSCwq96870 Interfaces are coming up when the Firepower is shutting down
CSCwq98101 Policy deployment fails when inline-set is configured on FTD HA
CSCwq98648 Low RAM allocation on ASAv can trigger unexpected behavior in 'asdm image' command
CSCwr05406 Traceback in HA stby node while snmpwalk on natAddrMapTable
CSCwr05837 SNMP process continuously restarts
CSCwr06290 ASA/FTD: Traceback in thread name CP Processing due to DCERPC inspection
CSCwr10732 Connection blocking active although "logging permit-hostdown' is set
CSCwr10747 ASA/FTD may traceback and reload due to memory exhaustion
CSCwr12965 Both the units in HA changed the encryption algorithm simultaneously
CSCwr14186 add context for cmd-invalid-encap asp-drop type in the "show asp drop" command usage
CSCwr19123 FPR HA ESP sequence number discrepancy when standby changes to Active resulting in Anti-replay drops
CSCwr22256 Traceback seen while FQDN list expands more than 200 entries for a resolved ip
CSCwr26857 File policy stops working due to SMB tcp conn terminated after 1hr for unknown reason despite not idle
CSCwr27095 Anyconnect users incorrectly get the prompts, based on the previous tunnel-group
CSCwr28908 ASA: Traceback and reload after saving asdm image
CSCwr31782 Secure Client SAML - External Browser May Prompt for a Certificate when using IKEv2-IPsec and Certificate Mapping
CSCwr42577 ASA/FTD may traceback and reload citing Thread Name 'lina' as the faulting thread.
CSCwr42969 Dynamic Offloaded Flows Interrupted midstream
CSCwr43586 Intermittent drop of self-originated ICMP TTL exceeded messages with reason "Unable to obtain connection lock (connection-lock)"
CSCwr48605 Lina traceback due to the incorrect option being received in the packet.
CSCwr49028 Secure client tunnel group authentication is affected when using SDI protocol
CSCwr50466 ASA/FTD: Wrong value shown for X509_STORE_CTX in 'show ssl objects'
CSCwr51629 RTSP Flows are dropped with drop reason "First TCP packet not SYN"
CSCwr55089 ASA/FTD - Traceback and Reload in Threadname DATAPATH
CSCwr61303 Lina: Traceback and reload webvpn_session_release
CSCwr61452 ASA traceback and reload due to memory corruption in IPsec SA pointers
CSCwr65540 ASA traceback while disabling GTP inspection
CSCwr74420 FTD - FTD RADIUS authentication fails with "bad authenticator" after disabling Management Interface Convergence
CSCwr81266 Unable to remove certificate-group-map
CSCwr83527 FP2110 Critical fault alerts for remote users
CSCwr88208 ASA/FTD: Fragmentation issue for IKE_Auth packets


Version 9.18.4.68 – September 29, 2025

Defects resolved since 9.18.4.67:

CSCwq82095 SAML response rejected with message for certain IDPs


Version 9.18.4.67 – September 25, 2025

Defects resolved since 9.18.4.66:

CSCwq79815 Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software VPN Web Server Unauthorized Access Vulnerability
CSCwq79831 Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software VPN Web Server Remote Code Execution Vulnerability


Version 9.18.4.66 – August 13, 2025

Defects resolved since 9.18.4.57:

CSCwb07908 Standby FTD/ASA sends DNS queries with source IP of 0.0.0.0
CSCwh11677 saml idp names longer than 128 characters cannot be used
CSCwh13312 Disable Notification Daemon heartbeat action
CSCwi15787 Management access over VPN not working when NAT exempt is configured with any->any
CSCwi57476 interface idb logging log rotation to FXOS logrotate utility
CSCwj29599 Primary/standby may transition to active amidst a shutdown sequence triggered from clish
CSCwj32736 SNMP walk does not work if IP is configured after SNMP is configured on ngfw management interface.
CSCwk88225 Critical fault : [FSM:FAILED]: user configuration(FSM:sam:dme:AaaUserEpUpdateUserEp)
CSCwm05960 Generated Crypto checksum changes without configuration change
CSCwm07419 ldap.conf does not get generated using hostname impacting external radius authentication
CSCwm86414 ASA - Failover config resync failed and unexpected reboot occurred
CSCwm92310 FQDNs are unresolved via DNS on data interface after reboot or traceback
CSCwm95189 Redis is an open source, in-memory database that persists on disk. An
CSCwn06520 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-2-2854'
CSCwn27872 Big chunk of Memory of around 25KB is being allocated on Stack in "eigrp_interface_ioctl" API
CSCwn32978 Traceback and reload in Thread Name Datapath
CSCwn36712 NAT divert for 8305 on standby not updating post failover causing the Primary, standby FTD to show offline on FMC
CSCwn38761 DNS FQDN obj doesn't go unresolved upon FQDN obj deleted on server/intf to reach sever is down in 7.7
CSCwn39081 SNMP walk results in ASCII value for IPSEC Peer instead of an IP address.
CSCwn59032 FCM GUI became inaccessible after upgrading to ASA 9.18.4.22 | FPR 2130 Platform Mode
CSCwn60726 Traceback and reload with Thread Name: vtemplate process
CSCwn69488 ASA/FTD - Traceback and Reload in Threadname IP RIB Update
CSCwn80419 Need the SVC Rx/Tx queue as a configurable option
CSCwn81118 RTSP packets getting stuck in transmit queue leading to 9k blocks exhaustion.
CSCwn81995 Traceback and Reload caused by Memory corruption with SNMP inspection enabled
CSCwn96929 ASA: Traceback and Reload Under Thread Name SSH
CSCwn97630 FTD reboot and traceback in DATAPATH due to IPv6 packet processing
CSCwn98402 Debuggability: FP2100 port-channel interfaces flap after upgrade
CSCwo00102 Snort3 trimming packets with invalid sequence number due to bad window size information received
CSCwo00332 Firepower wiping SSL trustpoint config after reloading.
CSCwo00702 Community lists should not throw an error until the last item in the list is being deleted
CSCwo08306 Command authorization fallback to Local only works for users with privilege 15.
CSCwo08724 Active HA unit goes into failed state before peer unit gets into a ready state during snort failure
CSCwo09195 Traceback and reload during the deployment after disabling FQDNs.
CSCwo18838 ASA/FTD may traceback and reload in Thread Name 'lina_exec_startup_thread'
CSCwo19762 Unable to rejoin data node in cluster after re-enabling mac-address auto in multi-context mode
CSCwo24856 9K block depletion causing slowdown of all traffic through firewall
CSCwo31094 Virtual ASA Traceback and Reload Caused by Disk Access Issues with NFS Enabled
CSCwo35783 Enhance Debugging for add/update/withdraw of routes with neighbors
CSCwo35788 Serviceability Enhancement - New 'show bgp internal' command for advanced debugging
CSCwo35810 show bgp update-group a.b.c.d displays "no such neighbor" when there is a valid neighbor
CSCwo35938 IPv6 Management communication is lost due to a missing management-only multicast route.
CSCwo44732 ARP is silently dropping packet for an unreachable next hop
CSCwo49425 Logging recipient-address not overriding the logging mail message severity levels
CSCwo54996 Traffic failure due to 9344 blocks leak
CSCwo58191 FTD: Large Delay in packets being inspected by snort
CSCwo58260 Add "built" and "teardown" messages for the GRE | IPinIP connections to the Lina syslog
CSCwo60609 DNS doctoring not working correctly if the doctoring rule is of type dynamic and has any interface
CSCwo61241 Logical App Stuck in 'Start Failed' Due to checkSystemCPUs Failure
CSCwo65060 FTD HA | Same MAC for port-channels causing network outage.
CSCwo66872 snmp_logging_thread is utilizing high CPU in control plane
CSCwo71052 FPR1010 Ethernet1/1 trunk port is not passing Vlan traffic after a reload
CSCwo75810 SNMP configuration is not applied consistently across same FTDs type and version
CSCwo78969 Traceback in thread name DATAPATH when a unit is re-joining the cluster
CSCwo79028 Post-Failover FQDN Resolution Deferred Until Next DNS Poll Interval
CSCwo79080 ENH: UDP traffic flow requires Initiator and Responder fields in the "show conn detail" output.
CSCwo79798 Cryptochecksum changed after reloading.
CSCwo80223 BFD packets are not dropped for single-hop BFD sessions received via alternate path
CSCwo82639 Local user details not replicated to data nodes in a cluster setup.
CSCwo82658 ASDM: Displays Error of Keypair already exists when adding an identity certificate.
CSCwo87763 ASA/FTD: Primary standby unit becomes Active after reload in HA set up
CSCwo88204 ASA/FTD traceback and reload triggered by the Smart Call Home process in sch_dispatch_to_url.
CSCwo91436 FPR 4125 Multi instance: High Snort and System Core CPU Usage (100%) Triggering FMC Critical Alerts
CSCwo91965 ASAv restarts unexpectedly
CSCwo94483 LINA stays inactive without reloading after traceback on non-CP thread
CSCwo97439 ACL: ASA may show false "OOB Access-list config change detected" warning after AAA authorization command is applied
CSCwo98752 Traceback in threadname DATAPATH while trying to re-join cluster.
CSCwp04235 ASA traceback and reload
CSCwp06882 high CPU usage after ASA upgrade from 9.20.3.9 to 9.20.3.16 running on Hyper-V
CSCwp11382 ASA/FTD: the ssl trust-point command deleted after a reload
CSCwp13540 Wrong URL incorrectly displayed for file upload with Japanese text in file path for client-less VPN
CSCwp16529 Negative value displayed for buffer drops when using " show cluster info load-monitor details"
CSCwp17700 Syslog format is not properly printed when EMBLEM format is enabled at least in one syslog host
CSCwp22214 Multiple mail drops and enq failures are seen while traffic is going through the box.
CSCwp33410 dmesg and kern.log file flooded with Tx Queue=0 logs
CSCwp34610 IKEv2-EAP Authentication Fails with Windows and MacOS Native VPN Clients
CSCwp37284 "CSRF Token Mismatch" error seen when users click logout from Clientless VPN page
CSCwp39319 ASA Memory leak while processing large CRLs.
CSCwp89969 Prolonged delays in firewall restart/reboot completion
CSCwp97862 If failover IPSEC PSK is 78 characters or greater HA breaks with "Could not set failover ipsec pre-shared-key"
CSCwq35960 OSPF: Lina Traceback and Reload on Both Units in High Availability Setup.


Version 9.18.4.57 – April 10, 2025

Defects resolved since 9.18.4.53:

CSCwk46737 ASA on HA: alloc_ch() alloc from chunk mem Failed message on one context in Standby device
CSCwn90900 High ASA/FTD memory usage due to polling of RA VPN related SNMP OIDs
CSCwn90958 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Authenticated Command Injection Vulnerability
CSCwo00141 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Server Denial of Service Vulnerability
CSCwo00880 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Server Denial of Service Vulnerability
CSCwo08042 ASAv reloaded unexpectedly with traceback on Unicorn Proxy Thread
CSCwo09060 SSL trustpoint with 4096 bit RSA keys not allowed by ASA if renewed via CLI
CSCwo15021 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
CSCwo15022 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
CSCwo15023 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
CSCwo15024 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
CSCwo15026 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
CSCwo15027 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability
CSCwo18850 Cisco Secure Firewall Adaptive Security Appliance, Secure Firewall Threat Defense Software HTTP Server Remote Code Execution Vulnerability
CSCwo41250 Traceback & Reload in thread named: DATAPATH-1-23988 during low memory condition
CSCwo49928 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability


Version 9.18.4.53 – March 5, 2025

Defects resolved since 9.18.4.52:

CSCwe88492 Banner login does not display when configured
CSCwe92324 FPR31xx - SNMP poll reports incorrect FanTray Status at Down while actually operational
CSCwf04460 The fxos directory disappears after cancelling show tech fprm detail command with Ctr+c is executed.
CSCwf25454 Stale anyconnect entries causing issues with routing
CSCwh17965 [Display]FXOS: PC member interface is shown as down & unassociated/unassigned after reload
CSCwj57435 Cleanup stale logrotate files
CSCwj61086 High CPU usage in svc_sam_dme process during deployment post breaking cluster or deleting inline-set
CSCwk28058 FTD memory depletion resulting in traceback and reload
CSCwk48628 FTD/FxOS - Upgrade/erase configuration result in App-instance 'Operational State: Starting'
CSCwm36631 FTD Secondary Unit got stuck in Bulk sync state.
CSCwm74289 NAT traps have to be rate-limited
CSCwm95191 In the Linux kernel, the following vulnerability has been resolved: s
CSCwm98278 TCP Conn not being flagged as Half-Closed after receiving the ACK for the FIN.
CSCwn00475 Memory Blocks 80 and 9344 leak due to priority-queue
CSCwn14130 FTD cluster to traceback and reload after extended PAT is enabled
CSCwn19706 Admin users are prompted to change local password when authenticating to external server
CSCwn22565 Frequent route updates causes routes to get removed causing outages
CSCwn39826 HA should prevent honouring failover requests while copy/config-sync/rollback is in progress
CSCwn40572 MI: Vlan info is not applied at FXOS level when Virtual MAC is configured
CSCwn44335 FXOS - Download command generates an extra "/" over HTTP and HTTPS GET requests
CSCwn45510 S2S VPN tunnel Child SA unsuccessful renegotiation
CSCwn46855 LINA may observe random traceback with Netflow configured
CSCwn47308 Critical health alerts 'user configuration(FSM.sam.dme.AaaUserEpUpdateUserEp)' on FPR 1100/2100/3100
CSCwn63839 Traceback in thread name Lina on configuring arp permit-nonconnected with BVI
CSCwn65415 ASA: floating-conn not closing UDP conns if conn was created without ARP entry for next hop
CSCwn73351 Asia/Bangkok timezone option not listed in ASA running on firepower1k
CSCwn73399 Cisco Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
CSCwn75667 Banner motd does not display when configured
CSCwn76079 SSH works in admin context but doesn't work in any user context after changing ssh key-exchange
CSCwn79553 Unreachable LDAP/AD referrals may cause delays or timeouts in external authentication on FTD
CSCwn80400 Slow download speeds with AnyConnect over TLS on networks with high latency
CSCwn80765 ISA3000 with ASA Refuses SSH Access If CiscoSSH is Enabled
CSCwn84557 Lina traceback and reload due to "spin_lock_fair_mode_enqueue"
CSCwn86002 core corruption still seen with switching to quick core feature
CSCwn91612 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Authenticated Command Injection Vulnerability
CSCwn92894 Occasionally, 'show chunkstat top-usage' output does not show all entries
CSCwn93319 ASA/FTD may traceback and reload in Thread Name "DATAPATH"
CSCwo01557 ASA traceback and reload on DATAPATH thread due to memory corruption
CSCwo09618 Enabling debugs with EEM fails


Version 9.18.4.52 – January 28, 2025

Defects resolved since 9.18.4.50:

CSCwf42097 PSEQ (Power-Sequencer) firmware may not be upgraded with bundled FXOS upgrade
CSCwi57783 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Access Control Rules Bypass Vulnerability
CSCwi65260 Modification of destination entries failed, when Source Object Group and Destination Object Group contain same inner object-group
CSCwi94356 Lina traceback and reload in Thread Name: cli_xml_request_process
CSCwk21540 ASA/FTD - Unable to establish RAVPN sessions
CSCwk63586 App instance stuck in STOP_FAILED with error message
CSCwm28007 Browser redirects to blank page when the user clicks the WebVPN bookmark
CSCwm35730 LINA may traceback in Thread Name: Datapath with NAT config
CSCwm37455 ASA/FTD will allow local IP pool with invalid netmask
CSCwm44412 FTD inline-set ignore reverse flag for inject/rewrite
CSCwm51874 FXOS: messages rotates every 40 minutes due to Notification Daemon messages' being spammed
CSCwm63868 FTD - Missing routes on BGP advertised-routes after FTD HA failover event
CSCwm68211 ASA traceback and reload on thread snmp_inspect
CSCwm70835 ASA traceback and reload due to stack overflow while using APCF file
CSCwm71265 ASA traceback and reload on thread DATAPATH when processing gtpv1 end marker msg for PDP
CSCwm96280 FTD device stuck in rommon mode after pressing reset button
CSCwm96652 Cluster assigning wrong nat for unit, traffic not being forwarded properly back to unit
CSCwm97054 ASA/FTD traceback and reload with high rate of SIP connections
CSCwn01281 GTP inspection not allowing GTP data packets if session create response has cause type 18
CSCwn03446 When capture enabled on cluster interface, it always includes CCL IP along with the configured rule
CSCwn03835 ASA/FTD may traceback and reload in Thread Name 'SSH Ctxt Thread'
CSCwn13187 ASA upgrade failing from 9.20.2.21 to the target version 9.20.3.4
CSCwn14447 ASA/FTD may traceback and reload in Thread Name 'ldap_client_thread'
CSCwn15104 FTD reload with traceback on swapcontext function
CSCwn15589 Need unified package/fix for pseq and associated rommon fix for pseq upgrade failure
CSCwn17121 ASA/FTD may traceback and reload in Thread Name 'cli_xml_request_process'.
CSCwn19739 HA would bring data interfaces up while moving from cold standby to failed state
CSCwn20024 ASA may traceback and reload in Thread Name 'ssh'
CSCwn21584 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Web Services Denial of Service Vulnerability
CSCwn22036 FTD: Management0/0 status went down, line protocol is up after upgrade
CSCwn22456 GTPv2 IE-type 157 (Signaling Priority Indication) is dropped with reason as unknown IE type
CSCwn24577 ASA booting process may freeze when including 'no pim' or 'no igmp' config
CSCwn24596 FTD may traceback and reload while executing "network-service reload" command and if it gets stuck
CSCwn26165 FTD/ASA May Traceback and Reload - During Deployment / Radius changes - Due to Radius Packets
CSCwn27819 Jumbo frame packets are being fragmented
CSCwn31653 FTD may traceback and reload in Thread Name "FPRLI_FPR4K-SM-32"
CSCwn34259 Monitored interfaces may go in waiting state after upgrade to 9.20.3.7
CSCwn34659 Firewall not initiating TCP request even after receiving the TC bit set in DNS response
CSCwn34707 Multiple Unicorn Admin Handler processes consume all the control plane CPU.
CSCwn35470 Serviceability : FQDN Packet based debug and capture trace support
CSCwn39780 FTD Deployment Resilience: Skip non-critical / non-existing commands to avoid deployment failures.
CSCwn42949 Implementing forwarder flow on non-owner units handling distributed secondary flow connections


Version 9.18.4.50 – November 14, 2024

Defects resolved since 9.18.4.47:

CSCwb77894 Firepower 1000/2100 may boot to ROMMON mode
CSCwc57500 Remove bootlogd package from FXOS to avoid ASA boot log problems
CSCwf04983 3100 unit failed to join the cluster with error "configured object (sys/switch-A/slot-2) not found"
CSCwh23124 Secondary/Standby node shows flapping between Ready & Failed when mgmt interface is shutdown
CSCwi05709 Security module may reboot reboot due to filesytem event
CSCwj72013 PAT communication via using PAT pool fails for about 40 seconds when a device joins a cluster
CSCwj98872 eth0 may not be properly initialized after reboot
CSCwk11989 Accepting duplicate object/group-object into object-group from multiple ssh sessions
CSCwk30049 ASA/FTD May traceback & reload citing Thread Name 'lina' as the faulting thread.
CSCwk42676 Virtual ASA/FTD may traceback and reload in thread PTHREAD
CSCwk67859 FTD and FXOS: RADIUS Protocol Spoofing Vulnerability (Blast-RADIUS): July 2024
CSCwk71227 FTD running on FPR 2k with LDAP skips backslash when updating ldap.conf
CSCwm06393 Changes in port-channel membership or member status may cause periodic OSPF/EIGRP adjacency flaps
CSCwm08231 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability
CSCwm08235 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software DHCP Denial of Service Vulnerability
CSCwm30731 The ASA's OSPF routing table is not properly synchronized with the neighbors
CSCwm33529 FXOS MTU Handling for Front Panel and Uplink Ports on Firepower devices require improvement
CSCwm33613 Default Group Policy is applied when receiving multiple Group Policies in SAML assertion attributes
CSCwm35751 FPR3100: Interface may go to half duplex speed is hardcoded to 100mbps
CSCwm41847 Serviceability to capture PDTS writing/reading block to help root cause CSCwm36314
CSCwm42000 FTD/ASA may traceback and reload in DATAPATH thread
CSCwm49154 FXOS fault F1738 seen in deploymet with Error: CSP_OP_ERROR. CSP signature verification error
CSCwm49410 Misconfigured Cross-Origin-Opener-Policy
CSCwm49721 ASA Traceback and Reload due to MEMORY CORRUPTION WAS DETECTED
CSCwm49782 enhance sma 2nd cruz heartbeat logging
CSCwm50591 ASA/FTD: Inbound IPsec packets are dropped when IPsec offload is enabled with VTI and sub-interface
CSCwm52264 Not able to remove or clear Fault "The password encryption key has not been set."
CSCwm52931 ASA/FTD may traceback and reload in Thread Name "fover_parse"
CSCwm56864 show run access-list command returns warning
CSCwm60536 SQLNet traffic getting dropped intermittently in Clustering data unit.
CSCwm61282 ASA/FTD: RA VPN tunnel causing memory leak leading to traceback & Reload
CSCwm78351 Potential High CPU usage in Multi-Context Cluster setup with unconditional execution of capture code
CSCwm85228 ASA/FTD may traceback and reload in Thread Name "IKEv2 Daemon" while joining failover
CSCwm89523 'no capture /all' failed to disable capture completely in the backend, causing high datapath CPU
CSCwm90905 GTP inspection drops packet with error ERROR-DROP:MsgType:32
CSCwm92397 LINA core observed pointing to "IP RIB Update" thread
CSCwm95070 Cisco Secure Firewall ASA and Secure FTD Software for FP 2100 Series IPv6 over IPsec DoS Vulnerability


Version 9.18.4.47 – October 9, 2024

Defects resolved since 9.18.4.40:

CSCwi57670 RAVPN SAML: External browser gives misleading message when FTD/ASA fails to parse assertion
CSCwi98274 unzip 5.52 is from 2005 is contains multiple vulnerabilities
CSCwj15125 ASA/FTD may traceback and reload in Thread Name 'lina' related to Netflow timer infra
CSCwk08241 FTD is not resolving FQDN for ACLs intermittently
CSCwk31371 NAT_HARDEN: CGNAT breaks when mapped ifc is configured as any
CSCwk40335 Trigger Alert/Warning when the associated FQDN IDs of an IP address surpasses the set limit of 8
CSCwk42676 Virtual ASA/FTD may traceback and reload in thread PTHREAD
CSCwk61157 FTD LINA Traceback and Reload dhcp_daemon Thread
CSCwk63733 HA-monitored interfaces are going into "waiting" state and subsequently to "Failed"
CSCwk67859 FTD and FXOS: RADIUS Protocol Spoofing Vulnerability (Blast-RADIUS): July 2024
CSCwk71866 ASA: Site-to-Site VPN between contexts on the same device drops traffic due to 'ipsec-tun-down'
CSCwk71992 BlastRADIUS vulnerability phase-1 fix for pix-asa - Message Authenticator
CSCwk75956 ASA/FTD may traceback and reload in Thread Name SSH
CSCwk87457 ASA/FTD may traceback and reload in Process Name "lina" after device was reloaded
CSCwk88182 FTDv50 traceback during normal operation at PTHREAD-8141 spin_lock_fair_mode_enqueue
CSCwk89836 ASA/FTD may traceback and reload in Thread Name 'strlen'
CSCwk94382 FTD: Lina might fail to respond to CONFIG_XML_REQUEST leading to stuck deployments
CSCwm01544 Lina traceback and reload in data-path thread
CSCwm02801 Unstable HA causing depolyment failure
CSCwm04650 Increase memory usage leading to tracebacks in Lina.
CSCwm05520 Disable cluster syn cookie decoding when FTD cluster is deployed with inline-set
CSCwm07389 CGroups errors in ASA Syslog during every reboot
CSCwm08232 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability
CSCwm13141 FTD CLISH/CLI gets locked up when trying to run any show command
CSCwm13199 SIP traffic is affected due to unexpected behavior with NAT untranslations.
CSCwm14509 Wrong drops seen with Invalid length for 23, 24 and 25 IE-Types during GTP inspection
CSCwm14561 ASA/FTD may traceback and reload in Thread Name 'fover_parse'
CSCwm14729 CSF 3100 series not rebooting after power outage, requiring manual power cycle
CSCwm42745 Dynamic Site-to-Site tunnels stuck in IN-NEG state When IKE_AUTH Is Missed
CSCwm49153 Cisco Adaptive Security Appliance Software SSH Server Resource DoS Vulnerability


Version 9.18.4.40 – August 29, 2024

Defects resolved since 9.18.4.34:

CSCwa82791 ENH: Support for snapshots of RX queues on InternalData interfaces when "Blocks free curr" goes low
CSCwf34069 Cisco ASA and FTD Remote Access SSL VPN Authentication Targeted Denial of Service Vulnerability
CSCwh51872 Message asa_log_client exited 1 time(s) seen multiple times
CSCwh83517 VTI tunnel goes down due to route change detected in VRF scenario
CSCwi44912 ISA3000 Traceback and reload boot loop
CSCwi90751 FTD/ASA - SNMP queries using snmpwalk are not displaying all "nameif" interfaces
CSCwj08696 FTD lina traceback Thread Name: Non-Lina Process data Init Thread
CSCwj31918 Segmentation fault with "logger_msg_dispatch" while HA sync
CSCwj35701 Dns-guard prematurely closing conn due to timing condition
CSCwj53725 Traceback observed while applying 'no failover' and 'failover' in the ASA standby
CSCwj83185 FTD/ASA : Standby FTD traceback and reload after enabling memory tracking
CSCwj83634 Seeing message "reg_fover_nlp_sessions: failover ioctl C_FOREG failed"
CSCwj87501 ASA/FTD may traceback and reload in Thread Name 'fover_FSM_thread'
CSCwk00604 ASA Fails to initiate AAA Authentication with IKEv2-EAP and Windows Native VPN Client
CSCwk05800 ASA/FTD SNMP polling fails due to overlapping networks in snmp-server host-group
CSCwk06573 Serviceablity : Improve routing infra debugs and add new for error conditions
CSCwk08476 FTD/ASA traceback and reload due to 'show bgp summary' memory leak
CSCwk10884 Connectivity failure due to mismatch between l2_table and subinterface mac address
CSCwk11983 High LINA CPU observed due to NetFlow due to 'flow-export delay flow-create' configuration
CSCwk13132 FTD/ASA 1550 blocks may get exhausted while sending logs to TCP syslog server
CSCwk22574 Remove SGT frames/packets to allow VTI decryption
CSCwk24176 FTD/ASA - VPN traffic flowing through the device may trigger tracebacks and reloads.
CSCwk26968 Backup feature does not save/restore DAP configuration in multiple context mode.
CSCwk27175 ASA/FTD: Substantial increase in the time taken to load configuration
CSCwk35710 FTD/LINA may traceback and reload when "show capture" command is executed in EEM script
CSCwk45975 TLS1.3 Decryption configuration on SSL policy is affecting DND traffic.
CSCwk48975 Packet-tracer output incorrectly appends 'control-plane' to drops for data-plane access-group
CSCwk53369 Cisco ASA and FTD Software Remote Access VPN Denial of Service Vulnerability
CSCwk62381 ASA might traceback and reload due to ssh/client hitting a null pointer while using SCP.
CSCwk68759 Split brain issue in HA failover due to which outage happened on customer network
CSCwk69742 FTD: Policy deployment failed due to mismatch of checksum.
CSCwk76142 ASA crashing in thread PIX Garbage Collector with inspect-rtsp enabled.


Version 9.18.4.34 – July 18, 2024

Defects resolved since 9.18.4.29:

CSCwh09968 ASA/FTD: Traceback and reload due to NAT change
CSCwh10931 ASA/FTD traceback and reload when invoking "show webvpn saml idp" CLI command
CSCwh63211 Lina core at snp_nat_xlate_verify_magic.part and soft traces
CSCwh70874 FTD: Policy Deployment failure due to abort as no progress
CSCwh78118 ASA/FTD traceback and reload on process fsm_send_config_info_initiator
CSCwi05240 ASA - Traceback the standby device while HA sync ACL-DAP
CSCwj17447 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-6-26174'
CSCwj19125 Cisco ASA and FTD NSG Access Control List Bypass Vulnerability
CSCwj20804 Cisco ASA and FTD Software VPN Web Server Limited Information Disclosure Vulnerability
CSCwj24828 Issue when two FQDN objects with same IP are added in source or destination (FTD/ASA)
CSCwj43345 SNMP poll for some OIDs may cause CPU hogs and high latency can be observed for ICMP packets
CSCwj49745 Cisco ASA and FTD VPN Web Client Services Cross-Site Scripting Vulnerabilities
CSCwj73061 SNMP OID for CPUTotal1min omits snort cpu cores entries when polled
CSCwj74323 ASAv Memory leak involving PKI/Crypto for VPN
CSCwj81743 FTD - Trace back and reload due to NAT involving fqdn objects
CSCwj82247 Cisco ASA and FTD SSL VPN Memory Management Denial of Service Vulnerability
CSCwj82736 TLS Handshake Fails if Segmented or Fragmented Client Hello Packet is Received Out of Order
CSCwj86116 High LINA CPU observed due to NetFlow configuration
CSCwj86320 Standby Unit Interfaces enter "Waiting" Status Post-FTD Upgrade Due to Incorrect "Hello" Message MAC
CSCwj88400 FTD may traceback and reload in process name lina while processing appAgent msg reply
CSCwj89264 FTD HA: Traceback and reload in netsnmp_oid_compare_ll
CSCwj99043 Cisco ASA & FTD Software IKEv2 Denial of Service Vulnerability
CSCwj99068 Cisco ASA and FTD Software IKEv2 VPN Denial of Service Vulnerability
CSCwk02804 WebVPN connections stuck in CLOSEWAIT state
CSCwk02928 ASA/FTD may traceback and reload in Thread Name PTHREAD
CSCwk04290 FPR 21xx - Traceback in Process Name: lina-mps during normal operations
CSCwk04492 ASA CLI hangs with 'show run' with multiple ssh sessions
CSCwk05851 "set ip next-hop" line deleted from config at reload if IP address is matched to a NAME
CSCwk06564 Add New Syslog for Routes for NP add/delete
CSCwk07934 Clock skew between FXOS and Lina causes SAML assertion processing failure
CSCwk08576 command to print the debug menu setting of service worker
CSCwk09612 Clock skew: FXOS clock diverges from Lina NTP time ~1-10 secs
CSCwk12497 Traceback and reload on active unit due to HA break operation.
CSCwk12698 SNMP polling of admin context mgmt interface fails to show all interfaces across all contexts
CSCwk12738 Cisco Adaptive Security Virtual Appliance and Secure FTD Virtual SSL VPN DoS Vulnerability
CSCwk13631 Traceback and reload during FTD upgrade due to FQDN network object NAT
CSCwk13812 ASA/FTD incorrectly forwards extended community attribute after upgrade.
CSCwk14909 Traffic drop with 'rule-transaction-in-progress' after failover with TCM cfgd in multi-ctx mode
CSCwk17637 State Link Stops Sending Hello Messages Post-Failover Triggered by Snort traceback in FTD HA
CSCwk17854 FTD doesn't send Type A query after receiving a refuse error from one DNS server in AAAA query.
CSCwk20882 ESP sequence number of 0 being sent after SA establishment/rekey
CSCwk21561 Add warning message when configuring CCL MTU
CSCwk22034 Snmpwalk displays incorrect interface speeds for values greater or equal than 10G
CSCwk22759 Issue with Setting Certain Timezones (e.g. GMT+1) on Cisco ASA Firepower in Appliance Mode
CSCwk25117 ENH: Add application support for blocking consecutive AAA failures on LINA
CSCwk27830 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwk32501 256/1550 block depletion process fover_thread
CSCwk36312 High cpu on "update block depletion" with secondary effects (Bgp flaps, traffic drops)
CSCwk44165 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability


Version 9.18.4.29 – June 6, 2024

Defects resolved since 9.18.4.24:

CSCvy51481 [ENH] FTD should show error/warning when attaching a not valid certificate to the interface for VPN
CSCwb03293 IKEv2 debugs: Received Policies and Expected Policies are empty
CSCwh29276 ASA: Traceback and reload when switching from single to multiple mode
CSCwh60971 NAT pool is not working properly despite is not reaching the 32k object ID limit.
CSCwh83021 ASA/FTD HA pair EIGRP routes getting flushed after failover
CSCwi43492 ASA traceback and reload on Thread Name: DATAPATH
CSCwi49770 ASA|FTD Traceback & reload in thread name Datapath
CSCwi56499 Cut-Through Proxy feature spikes CP CPU with a flood of un-authenticated traffic
CSCwi66461 WARN msg(speed not compatible, suspended) while creating port-channel on Victoria CE
CSCwi95796 FTD SNMP OID 1.3.6.1.4.1.9.9.109.1.1.1.1.7 always returns 0% for SysProc Average
CSCwj03764 In Spoke dual ISP case if ISP2 is down, VTI tunnels related to ISP1 flapping.
CSCwj05151 ASA/FTD may traceback and reload in Thread Name DATAPATH due to GTP Spin Lock Assertion
CSCwj08667 ASA/FTD Traceback and Reload during ssl session establishment
CSCwj13910 Crypto IPSEC SA Output Showing NO SA ERROR With IPSEC Offload Enabled
CSCwj19653 FTD - Trace back and reload due to NAT involving fqdn objects
CSCwj22086 Active unit goes to disabled state when there is a mismatch in firewall mode
CSCwj30980 Addition of debugs & a show command to capture the ID usage in the CTS SXP flow.
CSCwj34881 Command to show counters for access-policy filtered with a source IP address gives incorrect result
CSCwj34975 Multiple context interfaces fail to pass traffic
CSCwj38871 ASA traceback with thread name SSH
CSCwj44398 when set the route-map in route RIP on FTD, routes update is not working after FTD reload
CSCwj48704 ASA traceback and reload when accessing file system from ASDM
CSCwj49958 Crypto IPSEC Negotiation Failing At "Failed to compute a hash value"
CSCwj50406 All IPV6 BGP routes configured in device flapping
CSCwj55036 ASA/FTD: A delay in an async crypto command induces a traceback and subsequently a reload.
CSCwj59861 ASA/FTD may traceback and reload in Thread Name 'lina' due to SCP/SSH process
CSCwj60265 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-1-16803'
CSCwj62723 Error message spammed to console on Firepower 2100 devices while enabling SSH config
CSCwj68096 Console Access Stuck for ASAv hosted in CSP after Upgrade to 9.18.3.56
CSCwj68783 FTD/ASA-HA configs not in sync as the command sync process is sending configs with special chars
CSCwj72683 ASA - Bookmarks on the WebVPN portal are unreachable after successful login.
CSCwj73053 ASA may traceback and reload in Thread Name 'DATAPATH-21-16432'
CSCwj76503 Syslogs continue to be sent after disabling logging class on ASA
CSCwj82285 ASA/FTD may traceback and reload in Thread Name 'sdi_work'
CSCwj86116 High LINA CPU observed due to NetFlow configuration
CSCwj91570 Cisco ASA and FTD Software Remote Access VPN Brute Force Denial of Service Vulnerability
CSCwj93921 ASA after upgrade to 9.18.4.24 not able to save config with error: "Configuration line too long"
CSCwj95590 Browser redirects to logon page when the user clicks the WebVPN bookmark


Version 9.18.4.24 – May 2, 2024

Defects resolved since 9.18.4.22:

CSCvz70310 ASA may fail to create NAT rule for SNMP with: "error NAT unable to reserve ports."
CSCwc28334 Cisco ASA and FTD Software RSA Private Key Leak Vulnerability
CSCwd67100 ASA traceback and reload on Datapath process
CSCwe02012 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwe18462 ASA/FTD: Improve GTP Inspection Logging
CSCwe18467 ASA/FTD: GTP Inspection engine serviceability
CSCwe21884 Write wrapper around "kill" command to log who is calling it
CSCwf39108 Firewall rings may get stuck and cause packet loss when asp load-balance per-packet auto is used
CSCwf69880 Firewall Traceback and reload due to SNMP thread
CSCwf75694 ASA - The GTP inspection dropped the message 'Delete PDP Context Response' due to an invalid TEID=0
CSCwf84318 ASA/FTD traceback and reload on thread DATAPATH
CSCwh40294 ASA traceback due to panic event during SNMP configuration
CSCwh45450 2100: Interfaces missing from FTD after removing interfaces as members of a port-channel
CSCwh68068 Firepower WCCP router-id changes randomly when VRFs are configured
CSCwh69156 FTD-HA does not fail over sometimes when snort3 traceback
CSCwh69843 WM DT - ASA in transparent mode doesn't send equal IPv6 Router Advertisement packets to all nodes
CSCwh91065 Lina Traceback : Thread Name: DATAPATH during session terminate
CSCwh92345 crypto_archive file generated after the software upgrade.
CSCwh95025 GTP connections, under certain circumstances do not get cleared on issuing clear conn.
CSCwh95277 FTD traceback due to system memory exhaustion
CSCwh95443 Datapath hogs causing clustering units to get kicked out of the cluster
CSCwh96055 Management DNS Servers may be unreacheable if data interface is used as the gateway
CSCwh99398 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-34-17852'
CSCwi02754 FTD 1120 Traceback and reload on standby unit with SNMP enabled.
CSCwi03407 Traceback on FP2140 without any trigger point.
CSCwi04351 FTD upgrade failling on script 999_finish/999_zz_install_bundle.sh
CSCwi06797 ASA/FTD traceback and reload on thread DATAPATH
CSCwi20045 ASA/FTD may traceback and reload in Thread Name 'lina' due to a watchdog (watchdog_time = 0)
CSCwi31966 FTD ADI debugs may show incorrect server_group and/or realm_id for SAML-authenticated sessions
CSCwi36311 use kill tree function in SMA instead of SIGTERM
CSCwi36843 Detailed logging related to reason behind sub-interface admin state change during operations
CSCwi40193 Hairpinning of DCE/RPC/FTP traffic during the suboptimal lookup
CSCwi42291 Cisco Firepower Threat Defense Software TCP Snort 3 Detection Engine Bypass Vulnerability
CSCwi44208 low memory/stress causing traceback in SNMP
CSCwi45878 ASA/FTD: DNS Load Balancing with SAML does not work with VPN Load Balancing
CSCwi48699 ASA traceback and reload on Thread Name: pix_flash_config_thread
CSCwi49884 TCP MSS is changed back to the default value when a VTI or loopback interface is created
CSCwi53987 SSL protocol settings does not modify the FDM GUI certificate configuration or disable TLSv1.1
CSCwi55938 The "show asp drop" command usage requires better updates for cluster-related drops
CSCwi56667 ASA Traceback and reload on Thread Name "fover_parse" on Standby after Failover Group changes
CSCwi60285 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwi61135 Debugs failed to be enabled on SSH session
CSCwi62796 ASA/FTD Traceback and reload related to SSL/DTLS traffic processing
CSCwi63113 Null pointer dereference in SNMP that results in traceback and reload
CSCwi63743 ASA/FTD may traceback and reload in Thread Name "appAgent_monitor_nd_thread" & Rip: _lina_assert.
CSCwi64829 traceback and reload around function HA
CSCwi65116 DHCPv6:ASA traceback on Thread Name: DHCPv6 CLIENT.
CSCwi66676 ASA/FTD may traceback and reload in Thread Name 'webvpn_task'
CSCwi68625 Continuous snmpd restarts observed if SNMP host is configured before the IP is configured
CSCwi68833 ASA/FTD: Memory leak caused by Failover not freeing dnscrypt key cache due to unsyned umbrella flow
CSCwi69091 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwi70492 Firewall is in App Sync error in pseudo-standby mode and uses IPs from Active unit
CSCwi71998 "Stream: TCP normalization error in NO_TIMESTAMP" is seen when SSL Policy decrypt all is used
CSCwi74214 ASA/FTD traceback and reload in Thread Name: IKEv2 Daemon when moving from active to standby HA
CSCwi75198 Standby FTD experiencing periodic traceback and reload
CSCwi76361 Transparent firewall MAC filter does not capture frames with STP-UplinkFast dst MAC consistently
CSCwi79037 IKEv2 client services is not getting enabled - XML profile is not downloaded
CSCwi79042 FTD/Lina traceback and reload of HA pairs, in data path, after adding NAT policy
CSCwi79393 Policy Deployment Fails when removing the Umbrella DNS Policy from Security Intelligence
CSCwi80465 CCM ID 63 - LTS18
CSCwi84314 ASA CLI hangs with 'show run' on multiple SSH
CSCwi85689 TLS Server Identify: 'show asp table socket' output shows multiple TLS_TRK entries
CSCwi87382 Traceback and reload on Primary unit while running debugs over the SSH session
CSCwi90571 Access to website via Clientless SSL VPN Fails
CSCwi90998 ASA SNMP Polling Failure for environmental FXOS DME MIB (.1.3.6.1.4.1.9.9.826.2)
CSCwi95228 "crypto ikev2 limit queue sa_init" resets after reboot
CSCwi95994 Chromium-based browsers have SSL connection conflicts when FIPS CC is enabled on the firewall.
CSCwi96562 Cisco ASA and FTD FXOS CLI Root Privilege Escalation Vulnerability
CSCwi97836 ASA traceback and reload after configuring capture on nlp_int_tap and deleting context
CSCwi97839 FTD traceback assert in vni_idb_get_mode and reloaded
CSCwi99429 Policy deployment failure rollback didnt reconfigure the FTD devices
CSCwj02505 ASA Checkheaps traceback while entering same engineID twice
CSCwj05484 ASA upgrade from 9.16 to 9.18 causing change in AAA ldap attribute values by adding extra slash '\'
CSCwj06675 Cisco ASA and FTD Software Persistent Local Code Execution Vulnerability
CSCwj09110 Upload files through Clientless portal is not working as expected after the ASA upgrade
CSCwj09999 FP 3100 MTU change on management interface is NOT persistent across reboots (returns to default MTU)
CSCwj10451 The secondary device reloaded while rebooting the primary device.
CSCwj14028 CCM ID 67 - LTS18
CSCwj14832 SAML: Single sign-on AnyConnect token verification failure is seen after successful authentication
CSCwj15792 Cisco ASA and FTD Software Dynamic Access Policies Denial of Service Vulnerability
CSCwj16125 Traceback and Reload when testing or loading an invalid hostscan image
CSCwj17447 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-6-26174'
CSCwj20067 ASA: Warning messages not displayed when Static interface NAT are configured
CSCwj21880 FTD with Interface object optimization enabled is blocking traffic after renaming of zone names
CSCwj22235 Lina traceback and reload due to mps_hash_memory pointing to null hash table
CSCwj22990 After upgrading the ASA, \u201cSlot 1: ATA Compact Flash memory\u201d shows a ditterent value
CSCwj25975 FTD/ASA : CSR generation with comma between \u201cCompany Name\u201d attribute does not work expected
CSCwj32035 Clientless VPN users are unable to reach pages with HTTP Basic Authentication
CSCwj33487 ASA/FTD may traceback and reload while handling DTLS traffic
CSCwj33580 IKEv2 tunnels flap due to fragmentation and throttling caused by multiple ciphers/proposal
CSCwj33891 ASA/FTD Cluster memory exhaustion caused by NAT process during release of port blocks allocations
CSCwj38928 High latency observed on FPR31xx
CSCwj40761 ASA/FTD may traceback in Threadname: **CTM KC FPGA stats handler**


Version 9.18.4.22 – March 6, 2024

Defects resolved since 9.18.4.8:

CSCvx37329 Remove Syslog Messages 852001 and 852002 in Firewall Threat Defense
CSCwc31953 Prevention of RSA private key leaks regardless of root cause.
CSCwe47485 FTD: CLISH slowness due to command execution locking LINA prompt
CSCwe72330 FTD LINA traceback and reload in Datapath thread after adding Static Routing
CSCwe93736 ASA not updating Timezone despite taking commands
CSCwe97939 ASA/FTD Cluster: Change "cluster replication delay" with max value increase from 15 to 50 sec
CSCwf11877 TPK 3110 - Firmware version MISMATCH after upgrade to 7.2.4-144
CSCwf34070 Cisco ASA and FTD Remote Access SSL VPN Authentication Targeted Denial of Service Vulnerability
CSCwf36419 ASA/FTD: Traceback and reload with Thread Name 'PTHREAD'
CSCwf82279 Excessive logging of ssp-multi-instance-mode messages to /opt/cisco/platform/logs/messages
CSCwf87348 When state-link is flapped HA state changed from Standby-ready to Bulk-sync without failover reason
CSCwf99303 Management UI presents self-signed cert rather than custom CA signed one after upgrade
CSCwh16759 SNMP is not working on the primary active ASA unit in multi-context environment
CSCwh17576 Site-to-Site VPN tunnel status on FMC shows down even though it is UP from FTD side
CSCwh19352 comm alarm is raised and unit switches over even if one ack is dropped.
CSCwh43945 FTD/ASA traceback and reload may occur when ssl packet debugs are enabled
CSCwh47053 ASA/FTD may traceback and reload in Thread Name 'dns_cache_timer'
CSCwh58467 ASA does not sent 'warmstart' snmp trap
CSCwh62731 FTD Upgrade from 6.6.5 to 7.2.5 removing OGS causing rule expansion on boot
CSCwh65128 LINA show tech-support fails to generate as part of sf_troubleshoot.pl (Troubleshoot file)
CSCwh66636 Configuring and unconfiguring "match ip address test" may lead to traceback
CSCwh69346 ASA: Traceback and reload when restore configuration using CLI
CSCwh71161 ASA|FTD: Traceback & reload in thread Name: update_mem_reference
CSCwh71589 Coverity 886745: OVERRUN in verify_generic_signature
CSCwh83254 ASA/FTD: Traceback and reload on thread name CP Crypto Result Processing
CSCwh84376 In FPR4200/FPR3100-HA/cluster observed crashinfo/corefile.lina observed on device reboot.
CSCwh91574 FTD: Traceback in threadname cli_xml_request_process
CSCwh93710 'Last Hit' Timestamp fails to Update to latest value on ASA, ASDM, and FTD
CSCwh95010 Unexpected traceback on thread name Lina and device experienced reboot
CSCwi01085 FTD VMWare tracebacks at PTHREAD-3587
CSCwi01381 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwi02134 FTD sends multiple replicated NetFlow records for the same flow event
CSCwi02919 SNMP Unresponsive when snmp-server host specified
CSCwi03528 Cross ifc access: Revert PING to old non-cross ifc behavior
CSCwi06690 Certificate Encoding Issue when using AnyConnect cert Authentication/Authorisation
CSCwi11520 FTD OSPFV3 IPV6 Routing: FTD is sending unsupported extended LSA request to neighbor routers
CSCwi12284 Cisco ASA webvpn XSS Vulnerability
CSCwi12772 ASA cluster traceback Thread Name: DATAPATH-8-17824
CSCwi13134 Hardware bypass not working as expected in FP3140
CSCwi15409 ASA/FTD - may traceback and reload in Thread Name 'Unicorn Proxy Thread'
CSCwi18581 Firewall traceback and reload due to SSH thread
CSCwi19015 ASA/FTD may traceback and reload in Thread Name 'DATAPATH-13-6022'
CSCwi19145 FTD/ASA may traceback and reload in PKI, syslog, during upgrade
CSCwi19849 VPN load-balancing cluster encryption using Phase 2 deprecated ciphers
CSCwi20114 Cisco ASA Software and FTD Software SNMP Denial of Service Vulnerability
CSCwi20848 ASA/FTD high memory usage due to SNMP caused by RAVPN OID polling
CSCwi20955 FTD with may traceback in data-path during deployment when enabling TAP mode
CSCwi21625 FailSafe admin password is not properly sync'd with system context enable pw
CSCwi22296 ASA: The logical device may boot into failsafe mode because of an large configuration.
CSCwi24461 Device/port-channel goes down with a core generated for portmanager
CSCwi24880 ASA dropping IPSEC traffic incorrectly when "ip verify reverse-path" is configured
CSCwi26064 ASA : Modifying a route-map in one context affects other contexts
CSCwi26895 ASA SNMP OID cpmCPUTotalPhysicalIndex returning zero values instead of CPU index values
CSCwi27338 Stale asp entry for TCP 443 remains on standby after changing default port
CSCwi29532 ASA/FTD traceback and reload due to sigcrash in inspect_dp_pdts_recv_service_producer_vec
CSCwi31091 OSPF Redistribution route-map with prefix-list not working after upgrade
CSCwi31766 PSU fan shows critical in show environment output while operating normally
CSCwi32063 ASA/FTD: SSL VPN Second Factor Fields Disappear
CSCwi32759 Username-from-certificate secondary attribute is not extracted if the first attribute is missing
CSCwi34125 ASA: Snmpwalk shows "No Such Instance" for the OID ceSensorExtThresholdValue
CSCwi35267 TLS1.3: core decode points to tls_trk_try_switch_to_bypass_aux()
CSCwi38957 Policy Apply failed moving from FDM to FMC
CSCwi40536 ASA/FTD: Traceback and reload when running show tech and under High Memory utilization condition
CSCwi42295 Radius traffic not passing after ASA upgrade 9.18.2 and above version.
CSCwi42992 ASA/FTD may traceback and reload in Thread Name IKEv2 Daemon
CSCwi43782 GTP inspection dropping packets with IE 152 due to header length being invalid for IE type 152
CSCwi45630 Snort3 traceback with fqdn traffics
CSCwi46010 ASA/FTD: Cluster incorrectly generating syslog 202010 for invalid packets destined to PAT IP
CSCwi46023 FTD drops double tagged BPDUs.
CSCwi46641 FTDv may traceback and reload in Thread Name 'PTHREAD-3744' when changing interface status
CSCwi50343 Their standalone FTD running 7.2.2 on FPR-4112 experienced a traceback on the SNMP module
CSCwi53150 Service object-group protocol type mismatch error seen while access-list referencing already
CSCwi53431 Unable to Synch more then 100 environment-data with data unit
CSCwi56048 Interface fragment queue may get stuck at 2/3 of fragment database size
CSCwi59525 Multiple lina cores on 7.2.6 KP2110 managed by cdFMC
CSCwi59831 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwi62683 The SSH transport protocol with certain OpenSSH extensions, found in ... (CVE-2023-48795)
CSCwi76002 Memory exhaustion due to absence of freeing up mechanism for tmatch
CSCwi76630 FP2100/FP1000: ASA Smart licenses lost after reload
CSCwi79703 Incorrect Timezone Format on FTD When Configured via FXOS
CSCwi80465 CCM ID 63 - LTS18
CSCwi90040 Cisco ASA and FTD Software Command Injection Vulnerability
CSCwi90399 FTD/ASA system clock resets to year 2023
CSCwi95708 FTD: Hostname Missing from Syslog Message
CSCwi98284 Cisco ASA and FTD Software Persistent Local Code Execution Vulnerability
CSCwj10955 Cisco ASA and FTD Software Web Services Denial of Service Vulnerability


Version 9.18.4.8 – November 29, 2023

Defects resolved since 9.18.4.5:

CSCvx44261 SNMPv3: Special characters used in FXOS SNMPv3 configuration causes authentication errors
CSCwd31806 ASAv show crashinfo printing in loop continuously
CSCwf43850 ECMP + NAT for ipsec sessions support request for Firepower.
CSCwf89959 ASA: ISA3000 does not respond to entPhySensorValue OID SNMP polls
CSCwf92661 ASA|FTD: Traceback & reload due to a free buffer corruption
CSCwh14863 FTD 7.0.4 cluster drops Oracle's sqlnet packets due to tcp-not-syn
CSCwh18967 Include "show env tech" in FXOS FPRM troubleshoot
CSCwh30346 ASA/FTD: 1 Second failover delay for each NLP NAT rule
CSCwh54477 The FMC is showing "The password encryption key has not been set" alert for a 11xx/21xx/31xx device
CSCwh60631 Fragmented UDP packet via MPLS tunnel reassemble fail
CSCwh66359 ASDM can not see log timestamp after enable logging timestamp on cli
CSCwh68482 Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vu
CSCwh70323 Timestamp entry missing for some syslog messages sent to syslog server
CSCwh70481 Community string sent from router is not matching ASA
CSCwh71665 ASA traceback under match_partial_keyword during CPU profiling
CSCwh77348 ASA: Traceback and reload when executing the command "show nat pool detail" on a cluster setup
CSCwh93649 File copy via SCP using ciscossh stack fails with error "no such file or directory"
CSCwh95175 ASA/FTD may traceback and reload in Thread Name 'lina'
CSCwi15595 ASA traceback and reload during ACL configuration modification


Version 9.18.4.5 – October 25, 2023

Defects resolved in this release:

CSCwc78781 ASA/FTD may traceback and reload during ACL changes linked to PBR config
CSCwd34079 FTD: Traceback & reload in process name lina
CSCwe28912 Primary Unit lost all HA config after FTD HA upgrade
CSCwe44099 Cisco Adaptive Security Virtual Appliance and Secure FTD Virtual SSL VPN DoS Vulnerability
CSCwf36621 access-list: Cannot mix different types of access lists.
CSCwf41433 ASA/FTD client IP missing from TACACS+ request in SSH authentication
CSCwf63589 FTD snmpd process traceback and restart
CSCwf64590 Units get kicked out of the cluster randomly due to HB miss | ASA 9.16.3.220
CSCwf69901 FTD: Traceback and reload during OSPF redistribution process execution
CSCwf94450 FTD Lina traceback Thread Name: DATAPATH due to memory corruption
CSCwf95288 FPR1k Switchport passing CDP traffic
CSCwh09113 FPR1010 in HA failed to send or receive to GARP/ARP with error "edsa_rcv: out_drop"
CSCwh14352 Lina CiscoSSL upgrade to 1.1.1v and FOM 7.3a
CSCwh16301 Incorrect Hit count statistics on ASA Cluster only for Cluster-wide output
CSCwh19897 ASA/FTD Cluster: Reuse of TCP Randomized Sequence number on two different conns with same 5 tuple
CSCwh21474 ASA traceback when re-configuring access-list
CSCwh32118 ASDM management-sessions quota reached due to HTTP sessions stuck in CLOSE_WAIT
CSCwh40106 FTD hosted on KP incorrectly dropping decoded ESP packets if pre-filter action is analyze
CSCwh42412 FTD Block 9344 leak due to fragmented GRE traffic over inline-set interface inner-flow processing
CSCwh47701 ASA allows same BGP Dynamic routing process for Physical Data and management-only interfaces
CSCwh48844 FTD: Failover/High Availability disabled with Mate version 0.0 is not compatible
CSCwh49244 "show aaa-server" command always shows the Average round trip time 0ms.
CSCwh53143 ASA:Management access via IPSec tunnel is NOT working
CSCwh53745 ASA: unexpected logs for initiating inbound connection for DNS query response
CSCwh59199 ASA/FTD traceback and reload with IPSec VPN, possibly involving upgrade
CSCwh59557 Source NAT Rule performing incorrect translation due to interface overload
CSCwh60604 ASA/FTD may traceback and reload in Thread Name 'lina' while processing DAP data
CSCwh60778 FTD traceback and reload within TLS tracker for TLS 1.3 SSL decryption
CSCwh63588 FTD SNMPv3 host configuration gets deleted from IPTABLES after adding host-group configuration
CSCwh70905 Secondary lost failover communication on Inside, using IPv6, but next testing of Inside passes


Last edited on: December 1, 2025