CVE-2026-20079 Possible Unauthenticated Access to Cisco FMC Management Interface

Arnold Chan@slaz

•updated Sep 10, 2026•0•0•4

Detects unauthorized or suspicious POST requests to the Cisco Firepower Management Center (FMC) web interface that lack standard authentication headers (Cookie, Authorization, or X-Api-Token). This pattern is consistent with exploit attempts targeting CVE-2026-20079.