CVE-2026-20064

Name of the Vulnerable Software and Affected Versions Cisco Secure Firewall Threat Defense (FTD) Software (affected versions not specified)

Description A flaw exists in Cisco Secure Firewall Threat Defense (FTD) Software that may allow a local attacker with authentication to trigger an unexpected device reload, leading to a denial of service (DoS) condition. The issue stems from insufficient validation of user-provided input. An attacker with limited privileges can exploit this by executing specially crafted commands through the command-line interface (CLI). Successful exploitation results in a DoS condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.