Security Advisories, Responses and Notices
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- Cisco Secure Firewall Adaptive Security Appliance Software, Secure Firewall Threat Defense Software, IOS Software, IOS XE Software, and IOS XR Software Web Services Remote Code Execution Vulnerability 25/Sep/2025New
- Cisco IOS XR Software Management Interface ACL Bypass Vulnerability 10/Sep/2025New
- Cisco IOS XR ARP Broadcast Storm Denial of Service Vulnerability 10/Sep/2025New
- Cisco IOS XR Software Image Verification Bypass Vulnerability 10/Sep/2025New
- Cisco IOS, IOS XE, and IOS XR Software TWAMP Denial of Service Vulnerability 07/May/2025
- Cisco IOS XR Software for ASR 9000 Series Routers IPv4 Unicast Packets Denial of Service Vulnerability 12/Mar/2025
- Cisco IOS XR Software Hybrid Access Control List Bypass Vulnerability 12/Mar/2025
- Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability 12/Mar/2025
- Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerability 12/Mar/2025
- Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Denial of Service Vulnerability 12/Mar/2025
- Cisco IOS XR Software Secure Boot Bypass Vulnerability 12/Mar/2025
- Cisco IOS XR Software CLI Privilege Escalation Vulnerability 12/Mar/2025
- Cisco IOS XR Software Image Verification Bypass Vulnerability 12/Mar/2025
- Cisco IOS XR Software Access Control List Bypass Vulnerability 12/Mar/2025
- Cisco IOS XR Software Border Gateway Protocol Confederation Denial of Service Vulnerability 12/Mar/2025
- Cisco IOS, IOS XE, and IOS XR Software SNMP Denial of Service Vulnerabilities 12/Mar/2025
- Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability 13/Nov/2024
- Multiple Cisco Products Web-Based Management Interface Privilege Escalation Vulnerability 25/Sep/2024
- Cisco IOS XR Software Network Convergence System Denial of Service Vulnerability 11/Sep/2024
- Cisco Routed Passive Optical Network Controller Vulnerabilities 11/Sep/2024
- Cisco IOS XR Software Segment Routing for Intermediate System-to-Intermediate System Denial of Service Vulnerability 11/Sep/2024
- Cisco IOS XR Software UDP Packet Memory Exhaustion Vulnerability 11/Sep/2024
- Cisco IOS XR Software CLI Privilege Escalation Vulnerability 11/Sep/2024
- Cisco IOS XR Software CLI Arbitrary File Read Vulnerability 11/Sep/2024
- Cisco IOS XR Software Dedicated XML Agent TCP Denial of Service Vulnerability 11/Sep/2024
- Cisco IOS XR Software iPXE Boot Signature Bypass Vulnerability 07/Aug/2024
- Cisco IOS XR Software Secure Boot Bypass Vulnerability 10/Jul/2024
- Cisco IOS XR Software Health Check Open Port Vulnerability 15/Mar/2024
- Cisco IOS XR Software for ASR 9000 Series Aggregation Services Routers PPPoE Denial of Service Vulnerability 13/Mar/2024
- Cisco IOS XR Software MPLS and Pseudowire Interfaces Access Control List Bypass Vulnerabilities 13/Mar/2024
- Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability 13/Mar/2024
- Cisco IOS XR Software Layer 2 Services Denial of Service Vulnerability 13/Mar/2024
- Cisco IOS XR Software SSH Privilege Escalation Vulnerability 13/Mar/2024
- Cisco IOS XR Software Authenticated CLI Secure Copy Protocol and SFTP Denial of Service Vulnerability 13/Mar/2024
- Cisco IOS XR Software SNMP Management Plane Protection ACL Bypass Vulnerability 13/Mar/2024
- Cisco IOS XR Software Access Control List Bypass Vulnerability 13/Sep/2023
- Cisco IOS XR Software Image Verification Vulnerability 13/Sep/2023
- Cisco IOS XR Software Connectivity Fault Management Denial of Service Vulnerability 13/Sep/2023
- Cisco IOS XR Software Compression ACL Bypass Vulnerability 13/Sep/2023
- Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability 08/Mar/2023
- Cisco IOS, IOS XE, and IOS XR Software Link Layer Discovery Protocol Buffer Overflow Vulnerabilities 15/Dec/2022
- Vulnerabilities in Layer 2 Network Security Controls Affecting Cisco Products: September 2022 05/Oct/2022
- Cisco Network Convergence System 4000 Series TL1 Denial of Service Vulnerability 14/Sep/2022
- Cisco IOS XR Software Cisco Discovery Protocol Denial of Service Vulnerability 14/Sep/2022
- Cisco IOS XR Software Broadband Network Gateway PPP over Ethernet Denial of Service Vulnerability 14/Sep/2022
- Cisco IOS XR Software for ASR 9000 Series Routers Lightspeed-Plus Line Cards Denial of Service Vulnerability 28/Apr/2022
- Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability 19/Apr/2022
- Cisco IOS XR Software Arbitrary File Read and Write Vulnerability 18/Feb/2022
- Multiple Cisco Products CLI Command Injection Vulnerability 19/Jan/2022
- Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability 20/Oct/2021
- Cisco IOS XR Software IP Service Level Agreements and Two-Way Active Measurement Protocol Denial of Service Vulnerability 08/Oct/2021
- Cisco IOS XR Software for ASR 9000 Series Routers Denial of Service Vulnerability 08/Oct/2021
- Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerability 22/Sep/2021
- Cisco IOS XR Software Command Injection Vulnerabilities 17/Sep/2021
- Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Image Verification Vulnerabilities 08/Sep/2021
- Cisco IOS XR Software Border Gateway Protocol Resource Public Key Infrastructure Denial of Service Vulnerability 08/Sep/2021
- Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability 08/Sep/2021
- Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities 08/Sep/2021
- Cisco IOS XR Software Command Injection Vulnerability 15/Apr/2021
- Cisco IOS XR Software Slow Path Forwarding Denial of Service Vulnerability 10/Feb/2021
- Cisco IOS XR Software SNMP Management Plane Protection ACL Bypass Vulnerability 08/Feb/2021
- Cisco IOS XR Software Enf Broker Denial of Service Vulnerability 04/Feb/2021
- Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Privilege Escalation Vulnerability 03/Feb/2021
- Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability 03/Feb/2021
- Cisco IOS XR Software IPv6 Flood Denial of Service Vulnerability 03/Feb/2021
- Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Image Verification Vulnerabilities 03/Feb/2021
- Cisco IOS XR Software Enhanced Preboot eXecution Environment Unsigned Code Execution Vulnerability 04/Nov/2020
- Cisco IOS XR Authenticated User Privilege Escalation Vulnerability 02/Sep/2020
- Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerability 02/Sep/2020
- Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities 28/Aug/2020
- Cisco IOS XR Software Additional Paths Denial of Service Vulnerability 05/Aug/2020
- Cisco IOS XR Software Standby Route Processor Gigabit Ethernet Management Interface Access Control List Bypass Vulnerability 17/Jun/2020
- Cisco IOS, IOS XE, IOS XR, and NX-OS Software One Platform Kit Remote Code Execution Vulnerability 03/Jun/2020
- Cisco IOS XR Software IPsec Packet Processor Denial of Service Vulnerability 03/May/2020
- Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability 03/May/2020
- Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability 03/May/2020
- Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities 03/May/2020
- Cisco IOS XR Software Border Gateway Protocol Attribute Denial of Service Vulnerability 03/May/2020
- Cisco IOS XR Software BGP EVPN Operational Routes Denial of Service Vulnerability 03/May/2020
- Cisco IOS XR Software NETCONF Over Secure Shell ACL Bypass Vulnerability 02/May/2020
- Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability 21/Feb/2020
- Cisco IOS XR Software for Cisco ASR 9000 VMAN CLI Privilege Escalation Vulnerability 25/Sep/2019
- Cisco Products IPv6 Neighbor Discovery Crafted Packet Denial of Service Vulnerability 16/Sep/2019
- Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability 07/Aug/2019
- Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability 07/Aug/2019
- Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability 03/Jul/2019
- Cisco IOS XR Software Secure Shell Authentication Vulnerability 05/Jun/2019
- Cisco IOS XR Software BGP MPLS-Based EVPN Denial of Service Vulnerability 15/May/2019
- Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers MPLS OAM Denial of Service Vulnerability 15/May/2019
- Cisco ASR 9000 Series Aggregation Services Routers ACL Bypass Vulnerability 17/Apr/2019
- Cisco IOS XR gRPC Software Denial of Service Vulnerability 17/Apr/2019
- Cisco IOS XR Software Protocol Independent Multicast Denial of Service Vulnerability 17/Apr/2019
- Cisco IOS XR 64-Bit Software for Cisco ASR 9000 Series Aggregation Services Routers Network Isolation Vulnerability 17/Apr/2019
- Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: September 2016 02/Jan/2019
- Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability 03/Oct/2018
- Cisco IOS XR Software netconf Denial of Service Vulnerability 02/May/2018
- Cisco IOS XR Software UDP Broadcast Forwarding Denial of Service Vulnerability 18/Apr/2018
- Cisco IOS XR Software Routing and Forwarding Inconsistency Denial of Service Vulnerability 07/Feb/2018
- Cisco Aggregation Services Router 9000 Series IPv6 Fragment Header Denial of Service Vulnerability 31/Jan/2018
- Cisco IOS XR Software Local Packet Transport Services Denial of Service Vulnerability 29/Nov/2017
- Cisco IOS XR Software Denial of Service Vulnerability 04/Oct/2017
- Cisco IOS XR Software Incorrect Permissions Privilege Escalation Vulnerability 05/Jul/2017
- Cisco IOS XR Software Multicast Source Discovery Protocol Session Denial of Service Vulnerability 05/Jul/2017
- Cisco IOS XR Software Local Command Injection Vulnerability 21/Jun/2017
- Cisco IOS XR Software Privilege Escalation Vulnerability 21/Jun/2017
- Cisco Network Convergence System 5500 Series Routers Local Denial of Service Vulnerability 07/Jun/2017
- Cisco IOS XR Software Denial of Service Vulnerability 03/May/2017
- Cisco IOS XR Software Denial of Service Vulnerability 05/Apr/2017
- Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: January and February 2017 30/Jan/2017
- Cisco IOS XR Software HTTP 2.0 Request Handling Event Service Daemon Denial of Service Vulnerability 07/Dec/2016
- Cisco IOS XR Software Default Credentials Vulnerability 07/Dec/2016
- Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016 23/Nov/2016
- Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: November 2016 14/Nov/2016
- Cisco IOS XR Software Command-Line Interface Privilege Escalation Vulnerability 05/Oct/2016
- Cisco IOS XR Software Open Shortest Path First Link State Advertisement Denial of Service Vulnerability 28/Sep/2016
- Cisco IOS XR Software for NCS 6000 Series Devices OSPF Packet Processing Denial of Service Vulnerability 15/Sep/2016
- Cisco IOS XR Software for Cisco ASR 9001 Aggregation Services Routers Fragmented Packet Denial of Service Vulnerability 10/Aug/2016
- Cisco IOS XR Software Command Injection Vulnerability 14/Jul/2016
- Cisco IOS XR for NCS 6000 Packet Timer Leak Denial of Service Vulnerability 13/Jul/2016
- Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: June 2016 03/Jun/2016
- Cisco IOS XR Software LPTS Denial of Service Vulnerability 19/May/2016
- Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: May 2016 04/May/2016
- Cisco IOS XR for Cisco ASR 9000 Series Aggregation Services Routers Interface Flap Vulnerability 12/Apr/2016
- Cisco IOS XR Software SCP and SFTP Modules Denial of Service Vulnerability 23/Mar/2016
- Cisco Gigabit Switch Router 12000 Series Routers Denial of Service Vulnerability 11/Mar/2016
- Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2016 02/Mar/2016
- Cisco IOS XR Software OSPF Link State Advertisement PCE Vulnerability 04/Jan/2016
- Multiple Vulnerabilities in ntpd (April 2015) Affecting Cisco Products 07/Dec/2015
- Multiple Vulnerabilities in OpenSSL (December 2015) Affecting Cisco Products 04/Dec/2015
- Cisco IOS XR Software Crafted IPv6 Packet Denial of Service Vulnerability 08/Oct/2015
- Cisco IOS XR IPv6 Packet Processing Denial of Service Vulnerability 08/Oct/2015
- Cisco IOS XR SSH Disconnect Error Denial of Service Vulnerability 08/Oct/2015
- Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers Denial of Service Vulnerability 08/Oct/2015
- Cisco IOS XR MPLS LDP Packet Processing Denial of Service Vulnerability 08/Oct/2015
- Cisco IOS XR Concurrent Data Management Replication Process BGP Process Denial of Service Vulnerability 08/Oct/2015
- Cisco IOS XR LPTS Network Stack Remote Denial of Service Vulnerability 08/Oct/2015
- OpenSSL Version Rollback and Weak Cryptographic Algorithm Vulnerabilities 08/Oct/2015
- Cisco IOS XR Software SNMP Denial of Service Vulnerability 07/Oct/2015
- Cisco IOS XR Software SNMP Memory Leak Vulnerability 03/Oct/2015
- Cisco IOS XR Software Crafted SNMP Packets Denial of Service Vulnerability 03/Oct/2015
- Cisco IOS XR RIP Version 2 Crafted Packet Processing Denial of Service Vulnerability 03/Oct/2015
- Cisco IOS XR Software CGSE and ISM Vulnerability 03/Oct/2015
- Cisco IOS XR Software OSPFv3 Denial of Service Vulnerability 03/Oct/2015
- Cisco IOS XR Software SNMP Denial of Service Vulnerability 03/Oct/2015
- Cisco IOS XR Software DHCP Version 6 Process Hang Vulnerability 02/Oct/2015
- Cisco IOS XR Software DHCP Version 6 Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Punt Policer Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software MPLS Packet Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software NetFlow Processing Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Packet Parsing Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software DHCPv6 Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Malformed RSVP Packet Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Malformed SNMPv2 Packet Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Malformed TACACS+ Packet Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Malformed MPLS Packet Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software Compression ACL Bypass Vulnerability 02/Oct/2015
- Cisco IOS XR Software lighttpd TCP Session Vulnerability 02/Oct/2015
- Cisco IOS XR Software Malformed RSVP Packet Denial of Service Vulnerability 02/Oct/2015
- Cisco IOS XR Software SSHv1 Denial of Service Vulnerability 10/Jul/2015
- Multiple Vulnerabilities in OpenSSL (June 2015) Affecting Cisco Products 12/Jun/2015
- Cisco IOS XR Software Crafted IPv6 Packet Denial of Service Vulnerability 11/Jun/2015
- Cisco IOS XR Software BVI Routed Packet Denial of Service Vulnerability 15/Apr/2015
- Multiple Vulnerabilities in OpenSSL (January 2015) Affecting Cisco Products 10/Mar/2015
- Cisco IOS XR Software IPv6 Malformed Packet Denial of Service Vulnerability 20/Feb/2015
- GNU glibc gethostbyname Function Buffer Overflow Vulnerability 28/Jan/2015
- Multiple Vulnerabilities in ntpd Affecting Cisco Products 22/Dec/2014
- Cisco IOS XR Software IPv6 Malformed Packet Denial of Service Vulnerability 13/Jun/2014
- Cisco IOS XR Software IP Packet Vulnerability 31/May/2014
- Cisco IOS XR Software Memory Exhaustion Vulnerability 31/May/2014
- Cisco IOS XR Software Route Processor Denial of Service Vulnerability 31/May/2014
- Cisco IOS XR Internet Control Message Protocol Denial of Service Vulnerability 13/Aug/2013
- Cisco IOS Software Malformed Border Gateway Protocol Attribute Vulnerability 04/Oct/2012
- Vulnerability In Crypto Library 10/Dec/2011
- Crafted IP Option Vulnerability 10/Dec/2011
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