Skip to content

CVE record · 1 source

CVE-2026-20249

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability

Vendor: Cisco
Product: ASA, Firepower / FTD
Exposure class: Edge / VPN / firewall

Coverage

2

Every item in the archive that references this CVE, highest rank first. Headlines open the publisher.

31

Cisco advisory Cisco PSIRT 18 Sep 2026

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability

A vulnerability in the certification authentication feature of Internet Key Exchange version 2 (IKEv2) for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software…

Fix available CVE-2026-20249 Cisco
26

Cisco advisory Cisco PSIRT 16 Sep 2026

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability

A vulnerability in the certification authentication feature of Internet Key Exchange version 2 (IKEv2) for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software…

CVE-2026-20249 Cisco