CVE-2026-20049 | Cisco Secure Firewall Adaptive Security Appliance Software GCM buffer size (cisco-sa-asaftd-esp-dos-uv7yD8P5)

A vulnerability was found in Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software. It has been rated as critical. This impacts an unknown function of the component GCM. This manipulation causes incorrect calculation of buffer size.

This vulnerability is registered as CVE-2026-20049. Remote exploitation of the attack is possible. No exploit is available.

Upgrading the affected component is advised.