CVE-2023-20041

Multiple vulnerabilities in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device. These vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit these vulnerabilities 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. In some cases, it is also possible to cause a temporary availability impact to portions of the FMC Dashboard.

• CWE-79
• CWE-79

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-sK2gkfvJVendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-sK2gkfvJVendor Advisory

Published

Nov 1, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-20036A vulnerability in the web UI of Cisco IND could allow an au…9.9
• CVE-2023-20037A vulnerability in Cisco Industrial Network Director could a…5.4
• CVE-2023-20038A vulnerability in the monitoring application of Cisco Indus…8.8
• CVE-2023-20039A vulnerability in Cisco IND could allow an authenticated, l…5.5
• CVE-2023-2004Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2023-20040A vulnerability in the NETCONF service of Cisco Network Serv…5.5
• CVE-2023-20042A vulnerability in the AnyConnect SSL VPN feature of Cisco A…8.6
• CVE-2023-20043A vulnerability in Cisco CX Cloud Agent of could allow an au…6.7
• CVE-2023-20044A vulnerability in Cisco CX Cloud Agent of could allow an au…7.3
• CVE-2023-20045A vulnerability in the web-based management interface of Cis…7.2
• CVE-2023-20046A vulnerability in the key-based SSH authentication feature …8.8
• CVE-2023-20047A vulnerability in the Link Layer Discovery Protocol (LLDP) …6.5