XSS in Cisco Firepower Management Center
CVE-2025-20235
A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by inserting crafted input into various data fields in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (21.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Cisco Firepower Management Center — versions 6.2.3.12, 6.2.3.1, 6.2.3.10
- Cisco Secure_firewall_management_center — versions 6.2.3, 6.2.3.1, 6.2.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20235?
- CVE-2025-20235 is a medium-severity vulnerability in Cisco Firepower Management Center, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-08-14.
- How severe is CVE-2025-20235?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2025-20235 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.