Vulnerability Description
A vulnerability in the RADIUS subsystem implementation of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to inject arbitrary shell commands that are executed by the device. This vulnerability is due to a lack of proper handling of user input during the authentication phase. An attacker could exploit this vulnerability by sending crafted input when entering credentials that will be authenticated at the configured RADIUS server. A successful exploit could allow the attacker to execute commands at a high privilege level. 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Secure Firewall Management Center | 7.0.7 |
Related Weaknesses (CWE)
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciVendor Advisory
- https://www.bleepingcomputer.com/news/security/cisco-warns-of-max-severity-flaw-
- https://www.theregister.com/2025/08/15/cisco_secure_firewall_management_bug/
FAQ
What is CVE-2025-20265?
CVE-2025-20265 is a vulnerability with a CVSS score of 10.0 (CRITICAL). A vulnerability in the RADIUS subsystem implementation of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to inject arbitrary shell commands that...
How severe is CVE-2025-20265?
CVE-2025-20265 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-20265?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Secure Firewall Management Center.