#VU123530 Authentication bypass using an alternate path or channel in Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - CVE-2026-20079
Published: March 4, 2026
Vulnerability identifier: #VU123530
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Red
CVE-ID: CVE-2026-20079
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to an improper system process that is created at boot time. A remote non-authenticated attacker can bypass authentication process in the web interface and execute arbitrary code on the system with root privileges.
Remediation
Install updates from vendor's website.