High · published March 4, 2026
A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a DoS condition.
This vulnerability is due to insufficient error checking when processing SAML messages. An attacker could exploit this vulnerability by sending crafted SAML messages to the SAML service. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
| Product | Versions | Fixed in |
|---|---|---|
| cisco/adaptive_security_appliance_software | ≥ 9.12.1, < 9.16.4.85 | 9.16.4.85 |
| cisco/adaptive_security_appliance_software | ≥ 9.17.1, < 9.18.4.66 | 9.18.4.66 |
| cisco/adaptive_security_appliance_software | ≥ 9.19.1, < 9.20.4 | 9.20.4 |
| cisco/adaptive_security_appliance_software | ≥ 9.22.1.1, < 9.22.2.4 | 9.22.2.4 |
| cisco/adaptive_security_appliance_software | ≥ 9.23.1, < 9.23.1.7 | 9.23.1.7 |
| cisco/secure_firewall_threat_defense | ≥ 6.4.0, < 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 | ≥ 7.3.0, < 7.4.3 | 7.4.3 |
| cisco/secure_firewall_threat_defense | ≥ 7.6.0, < 7.6.4 | 7.6.4 |
| cisco/secure_firewall_threat_defense | ≥ 7.7.0, < 7.7.11 | 7.7.11 |