By NeoTeo
Publication Date: 2026-11-01 05:47:00
On October 29, 2026, the Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-76418 to its Known Exploited Vulnerabilities (KEV) Catalog, citing evidence of active exploitation. The flaw affects Cisco Secure Firewall Adaptive Security Appliance (ASA) and Threat Defense (FTD) software, but exposure depends on three VPN configuration conditions being present together.
Which ASA and FTD configurations are exposed?
The reported attack requires a vulnerable software release, a reachable Remote Access SSL VPN service, and secondary authentication configured in the relevant tunnel group. All three conditions matter. A successful VPN login is not required to reach the affected processing path.
An unauthenticated remote attacker can trigger an unexpected firewall reload, causing a denial of service. Cisco’s reported severity rating is CVSS 8.6. The practical check is therefore whether the device’s release and VPN configuration meet the stated conditions, not simply…