Cisco · Cisco Secure Firewall Threat Defense (Ftd) · 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.