CVE-2024-20403: Cisco Firepower Management Center

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. 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.

Affected products

• Cisco Firepower Management Center: version 6.4.0.17 only; version 6.4.0.18 only; version 6.6.7.2 only; version 7.0.6.1 only; version 7.0.6.2 only; version 7.2.5.1 only; …
• Cisco Secure Firewall Management Center: version 6.2.3 only; version 6.2.3.1 only; version 6.2.3.2 only; version 6.2.3.3 only; version 6.2.3.4 only; version 6.2.3.5 only; …

Published 2024-10-23. Last modified 2026-06-17.