CVE-2026-20349
CRITICAL CISACVSS Score
N/A
Severity
CRITICAL
Source
CISA
Published
Aug 11, 2026
Description
Cisco โ Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) : Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) contain a heap inspection vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.