Vulnslist

Cisco vulnerabilities by product, model, software, and advisory.

CVE-2025-20239

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA) Software, and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition. This vulnerability is due to a lack of proper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. In the case of Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly. In the case of Cisco ASA and FTD Software, a successful exploit could allow the attacker to partially exhaust system memory, causing system instability such as being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.

SeverityHIGH
CVSS8.6
CWECWE-401
KEV No
Published
Modified

Related Products

Product Advisory Evidence
Cisco IOS cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Secure Firewall Threat Defense Virtual cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Secure Firewall 1200 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Secure Firewall 4200 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Secure Firewall 3100 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Adaptive Security Virtual Appliance (ASAv) cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Firepower 4100 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Firepower 9000 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco ASA 5500-X Series Firewalls cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Firepower 1000 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Firepower 2100 Series cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco IOS XE Software cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln
Cisco Catalyst 9600 Series Switches cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln · software-dependent
Cisco Catalyst 9500 Series Switches cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln · software-dependent
Cisco Catalyst 9400 Series Switches cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln · software-dependent
Cisco Catalyst 9200 Series Switches cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln · software-dependent
Cisco Catalyst 9300 Series Switches cisco-sa-asa-ftd-ios-dos-DOESHWHy Cisco OpenVuln · software-dependent