Authentication Bypass Vulnerability in Cisco Secure Firewall Management Center Software that allows attackers to bypass authentication mechanisms.
An attacker could bypass authentication controls in the Cisco Secure Firewall Management Center, potentially gaining unauthorized access to the management interface. This could allow attackers to view, modify, or delete security configurations, manage firewall policies, access sensitive data, and compromise the entire security posture of the organization's network infrastructure.
There is no evidence that a public proof-of-concept exists. There is no evidence of proof of exploitation at the moment.
Patch information is not provided in the available data.
Immediately prioritize patching all instances of Cisco Secure Firewall Management Center software. Restrict network access to the management interface, implementing network segmentation and access controls. Monitor authentication logs for suspicious access attempts. Consider implementing additional authentication mechanisms and network monitoring to detect unauthorized access patterns.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Feedly found the first article mentioning CVE-2026-20079 . See article
NVD published the first details for CVE-2026-20079
A CVSS base score of 10 has been assigned.
Two Perfect 10s: Cisco FMC Under Siege
CVE-2026-20079 - Exploits & Severity - Feedly
Cisco Event Response: March 2026 Cisco Secure Firewall ASA, Secure FMC, and Secure FTD Software Security Advisory Bundled Publication
Cisco warns of max severity Secure FMC flaws giving root access | BleepingComputer
Root Access for All: Critical Auth Bypass Hits Cisco Firewall Management Center
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