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CVE-2026-20101

nvd nist
Published: Mar 4, 2026Modified: Aug 11, 2026

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8.6
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 4.0
Source: psirt@cisco.com (Secondary)

Description

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.

Affected (10)

Cisco
2 products
Adaptive Security Appliance Software
Secure Firewall Threat Defense
Configuration A
5 vulnerable
Vulnerable SoftwareAffected Versions
Cisco
Adaptive Security Appliance Software
9.12.1 ≤ version < 9.16.4.85
Adaptive Security Appliance Software
9.17.1 ≤ version < 9.18.4.66
Adaptive Security Appliance Software
9.19.1 ≤ version < 9.20.4
Adaptive Security Appliance Software
9.22.1.1 ≤ version < 9.22.2.4
Adaptive Security Appliance Software
9.23.1 ≤ version < 9.23.1.7
Configuration B
5 vulnerable
Vulnerable SoftwareAffected Versions
Cisco
Secure Firewall Threat Defense
6.4.0 ≤ version < 7.0.9
Secure Firewall Threat Defense
7.1.0 ≤ version < 7.2.11
Secure Firewall Threat Defense
7.3.0 ≤ version < 7.4.3
Secure Firewall Threat Defense
7.6.0 ≤ version < 7.6.4
Secure Firewall Threat Defense
7.7.0 ≤ version < 7.7.11

Related CWEs

CWE-330
Use of Insufficiently Random Values
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

References (1)

Source: psirt@cisco.com
Vendor Advisory

Timeline

No history available yet.