CVE-2026-20079
CriticalCVSS 10.0Exploitation Probability (EPSS)
Very high risk98th percentile - higher than 98% of all known CVEs
Summary
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software allows an unauthenticated, remote attacker to bypass authentication and execute script files to obtain root access to the underlying operating system. This is due to an improper system process created at boot time.
Risk Assessment
An attacker can gain full root control over the device, compromising confidentiality, integrity, and availability of data and potentially taking over the entire security infrastructure.
Recommendation
Apply the update provided by Cisco for Cisco Secure Firewall Management Center (FMC) as soon as it becomes available.
Original NVD description (English source)
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.