CVE-2026-20100 | Cisco Secure Firewall Adaptive Security Appliance Software SSL VPN buffer overflow (cisco-sa-asaftd-vpn-m9sx6MbC)

A vulnerability categorized as critical has been discovered in Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software. Affected is an unknown function of the component SSL VPN. Such manipulation leads to buffer overflow.

This vulnerability is documented as CVE-2026-20100. The attack can be executed remotely. There is not any exploit available.

It is advisable to upgrade the affected component.