Improper Neutralization of Special Elements in Output Used by a Downstream Component in Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - CVE-2025-20265
Published: August 14, 2025 / Updated: September 26, 2025
Vulnerability identifier: #VU114092
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-20265
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper input validation in the RADIUS subsystem implementation during the authentication phase. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.
Note, for this vulnerability to be exploited, Cisco Secure FMC Software must be configured for RADIUS authentication for the web-based management interface, SSH management, or both.
Affected software
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
How to mitigate CVE-2025-20265
Install updates from vendor's website.
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - addressed in versions 7.0.8, 7.7.10