Do Son Cisco Talos warns of Cisco FMC vulnerabilities actively exploited in the wild. Attackers chain CVE-2026-20079 and CVE-2026-20316 to deploy ransomware.
CVE-2026-20079
A critical 10.0 CVSS zero-click flaw (CVE-2026-20079) in Cisco Secure FMC gives unauthenticated attackers root access. Patch your systems immediately.