Medium · published March 4, 2026
A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the SAML feature and access sensitive, browser-based information.
This vulnerability is due to insufficient input validation of multiple HTTP parameters. An attacker could exploit this vulnerability by persuading a user to access a malicious link. A successful exploit could allow the attacker to conduct a reflected XSS attack through an affected device.
| Product | Versions | Fixed in |
|---|---|---|
| cisco/adaptive_security_appliance_software | ≥ 9.16.1, < 9.16.4.89 | 9.16.4.89 |
| cisco/adaptive_security_appliance_software | ≥ 9.17.1, < 9.18.4.71 | 9.18.4.71 |
| cisco/adaptive_security_appliance_software | ≥ 9.20.1, < 9.20.4.19 | 9.20.4.19 |
| cisco/adaptive_security_appliance_software | ≥ 9.22.1.1, < 9.22.2.32 | 9.22.2.32 |
| cisco/adaptive_security_appliance_software | ≥ 9.23.1, < 9.23.1.26 | 9.23.1.26 |
| cisco/secure_firewall_threat_defense | ≥ 7.0.0, < 7.0.9 | 7.0.9 |
| cisco/secure_firewall_threat_defense | ≥ 7.1.0, < 7.2.11 | 7.2.11 |
| cisco/secure_firewall_threat_defense | ≥ 7.4.0, < 7.4.3 | 7.4.3 |
| cisco/secure_firewall_threat_defense | ≥ 7.6.0, < 10.0.0 | 10.0.0 |