India, Aug. 13 -- Cisco firewalls often sit at one of the most important points in an enterprise network. They protect connections, provide remote access, and help keep users connected to business systems. A newly disclosed vulnerability shows how that position can also make an availability flaw a pressing operational risk.

CVE-2026-20349 Cisco ASA/FTD is a high-severity vulnerability affecting Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software. It carries a Common Vulnerability Scoring System (CVSS) score of 8.6 and is already being exploited in the wild.

The flaw does not need stolen credentials or a user clicking a malicious link. An unauthenticated remote attacker can s...