Security Advisories, Responses and Notices
Some links below may open a new browser window to display the document you selected.
-
- Cisco IOS Software and IOS XE Software Release 3E HTTP Server Denial of Service Vulnerability 25/Mar/2026New
- Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability 25/Mar/2026New
- 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 06/Nov/2025
- Cisco IOS and IOS XE Software CLI Denial of Service Vulnerability 24/Sep/2025
- SNMP Remote Code Execution Vulnerabilities in Cisco IOS and IOS XE Software 30/Jul/2025
- Cisco Adaptive Security Appliance Software, Firepower Threat Defense Software, IOS Software, and IOS XE Software IKEv2 Denial of Service Vulnerability 07/May/2025
- Cisco IOS and IOS XE Software SNMPv3 Configuration Restriction Vulnerability 07/May/2025
- Cisco IOS, IOS XE, and IOS XR Software SNMP Denial of Service Vulnerabilities 12/Mar/2025
- Cisco IOS and IOS XE Software Resource Reservation Protocol Denial of Service Vulnerability 25/Sep/2024
- Cisco IOS and IOS XE Software Internet Key Exchange Version 1 Fragmentation Denial of Service Vulnerabilities 27/Mar/2024
- Cisco IOS and IOS XE Software Locator ID Separation Protocol Denial of Service Vulnerability 27/Mar/2024
- Cisco IOS and IOS XE Software Command Authorization Bypass Vulnerability 13/Oct/2023
- Cisco IOS and IOS XE Software Cisco Group Encrypted Transport VPN Software Out-of-Bounds Write Vulnerability 27/Sep/2023
- Cisco IOS and IOS XE Software DHCP Version 4 Relay Denial of Service Vulnerability 15/Dec/2022
- Cisco IOS and IOS XE Software Internet Key Exchange Version 1 Denial of Service Vulnerability 15/Dec/2022
- Cisco IOS and IOS XE Software DHCP Version 4 Relay Heap Overflow Denial of Service Vulnerability 15/Dec/2022
- Cisco IOS, IOS XE, and IOS XR Software Link Layer Discovery Protocol Buffer Overflow Vulnerabilities 15/Dec/2022
- Cisco IOS and IOS XE Software DHCP Version 4 Relay Reply Denial of Service Vulnerability 15/Dec/2022
- Cisco IOS and IOS XE Software SSH Denial of Service Vulnerability 28/Sep/2022
- Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerability 22/Sep/2021
- Cisco IOS and IOS XE Software FXO Interface Destination Pattern Bypass Vulnerability 22/Sep/2021
- Cisco IOS and IOS XE Software Link Layer Discovery Protocol Denial of Service Vulnerability 22/Sep/2021
- Cisco IOS and IOS XE Software Information Disclosure Vulnerability 24/Sep/2020
- Cisco IOS and IOS XE Software ISDN Q.931 Denial of Service Vulnerability 24/Sep/2020
- Cisco IOS and IOS XE Software Tcl Denial of Service Vulnerability 08/Jun/2020
- Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability 03/Jun/2020
- Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerability 03/Jun/2020
- Cisco IOS and IOS XE Software Tcl Arbitrary Code Execution Vulnerability 03/Jun/2020
- Cisco IOS and Cisco IOS XE Software Web UI Cross-Site Request Forgery Vulnerability 28/Apr/2020
- Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability 04/Oct/2019
- Cisco IOS and IOS XE Software HTTP Client Information Disclosure Vulnerability 25/Sep/2019
- Cisco IOS and IOS XE Software IP Ident Denial of Service Vulnerability 25/Sep/2019
- Cisco Products IPv6 Neighbor Discovery Crafted Packet Denial of Service Vulnerability 16/Sep/2019
- Cisco IOS and IOS XE Software Hot Standby Router Protocol Information Leak Vulnerability 01/Apr/2019
- Cisco IOS and IOS XE Software TACACS+ Client Denial of Service Vulnerability 26/Sep/2018
- Cisco IOS and IOS XE Software Cisco Discovery Protocol Denial of Service Vulnerability 26/Sep/2018
- Cisco IOS and IOS XE Software VLAN Trunking Protocol Denial of Service Vulnerability 26/Sep/2018
- Multiple Cisco Products OSPF LSA Manipulation Vulnerability 03/Aug/2017
- Cisco IOS and IOS XE Software Layer 2 Tunneling Protocol Denial of Service Vulnerability 22/Mar/2017
- OSPF LSA Manipulation Vulnerability in Multiple Cisco Products 13/Feb/2017
- Cisco IOS Software and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerabilities 07/Dec/2016
- IKEv1 Information Disclosure Vulnerability in Multiple Cisco Products 05/Oct/2016
- Cisco IOS and IOS XE Software Internet Key Exchange Version 1 Fragmentation Denial of Service Vulnerability 28/Sep/2016
- Cisco IOS and IOS XE Software AAA Login Denial of Service Vulnerability 28/Sep/2016
- Cisco IOS and IOS XE Software H.323 Message Validation Denial of Service Vulnerability 28/Sep/2016
- Cisco IOS and IOS XE Software DNS Forwarder Denial of Service Vulnerability 28/Sep/2016
- Cisco IOS and IOS XE Software Multicast Routing Denial of Service Vulnerabilities 28/Sep/2016
- Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Fragmentation Denial of Service Vulnerability 23/Mar/2016
- Cisco IOS Software and IOS XE Software TCP Packet Memory Leak Vulnerability 14/Jan/2016
- Multiple Vulnerabilities in ntpd (April 2015) Affecting Cisco Products 07/Dec/2015
- OpenSSL RSA Temporary Key Cryptographic Downgrade Vulnerability 08/Oct/2015
- Cisco IOS Software TFTP Server Denial of Service Vulnerability 22/Jul/2015
- Cisco IOS Software Multicast Source Discovery Protocol Vulnerability 10/Jul/2015
- Cisco IOS Internet Key Exchange Vulnerability 10/Jul/2015
- Cisco IOS Software RSVP Vulnerability 10/Jul/2015
- Multiple Vulnerabilities in OpenSSL Affecting Cisco Products 27/Mar/2015
- Multiple Vulnerabilities in OpenSSL (January 2015) Affecting Cisco Products 10/Mar/2015
- Cisco IOS Software DHCP Version 6 Denial of Service Vulnerability 24/Sep/2014
- Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability 24/Sep/2014
- Cisco IOS Software Network Address Translation Vulnerability 31/May/2014
- Cisco IOS Software Internet Key Exchange Memory Leak Vulnerability 31/May/2014
- Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks Denial of Service Vulnerability 26/Mar/2014
- Cisco IOS Software Internet Key Exchange Version 2 Denial of Service Vulnerability 26/Mar/2014
- Cisco IOS Software Network Address Translation Vulnerabilities 26/Mar/2014
- Cisco IOS Software Resource Reservation Protocol Interface Queue Wedge Vulnerability 12/Mar/2014
- Cisco IOS Software DHCP Denial of Service Vulnerability 25/Sep/2013
- Cisco IOS Software Multicast Network Time Protocol Denial of Service Vulnerability 25/Sep/2013
- Cisco IOS Software Resource Reservation Protocol Denial of Service Vulnerability 11/Apr/2013
- Cisco IOS Software Network Address Translation Denial of Service Vulnerability 27/Mar/2013
- Cisco IOS Software DHCP Version 6 Server Denial of Service Vulnerability 18/Oct/2012
- Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability 03/Oct/2012
- Cisco IOS Software RSVP Denial of Service Vulnerability 28/Mar/2012
- Cisco IOS Software Command Authorization Bypass 28/Mar/2012
- Cisco IOS Software Reverse SSH Denial of Service Vulnerability 28/Mar/2012
- Cisco IOS Software Crafted IPv6 over MPLS Denial of Service Vulnerability 28/Sep/2011