CVE-2026-20152 — Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability

Description (CNA)

A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements. This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.

Affected (CNA)

Vendor / product	Versions
Cisco / Cisco Secure Web Appliance	affected 11.8.0-453; affected 12.5.3-002; affected 12.0.3-007; affected 12.0.3-005; affected 14.1.0-032; affected 14.1.0-047; affected 14.1.0-041; affected 12.0.4-002; affected 14.0.2-012; affected 11.8.0-414; affected 12.0.1-268; affected 11.8.1-023; affected 11.8.3-021; affected 11.8.3-018; affected 12.5.1-011; affected 11.8.4-004; affected 12.5.2-007; affected 12.5.2-011; affected 14.5.0-498; affected 12.5.4-005; affected 12.5.4-011; affected 12.0.5-011; affected 14.0.3-014; affected 12.5.5-004; affected 12.5.5-005; affected 12.5.5-008; affected 14.0.4-005; affected 14.5.1-008; affected 14.5.1-016; affected 15.0.0-355; affected 15.0.0-322; affected 12.5.6-008; affected 15.1.0-287; affected 14.5.2-011; affected 15.2.0-116; affected 14.0.5-007; affected 15.2.0-164; affected 14.5.1-510; affected 12.0.2-012; affected 12.0.2-004; affected 14.5.1-607; affected 14.5.3-033; affected 15.0.1-004; affected 15.2.1-011; affected 14.5.0-673; affected 14.5.0-537; affected 12.0.1-334; affected 14.0.1-503; affected 14.0.1-053; affected 11.8.0-429; affected 14.0.1-040; affected 14.0.1-014; affected 12.5.1-043; affected 15.2.2-009; affected 15.2.3-007; affected 15.2.4-022; affected 15.2.5-011; affected 15.2.5-013; affected 14.6.0-108

Vendor / product

Versions

Cisco / Cisco Secure Web Appliance

affected 11.8.0-453; affected 12.5.3-002; affected 12.0.3-007; affected 12.0.3-005; affected 14.1.0-032; affected 14.1.0-047; affected 14.1.0-041; affected 12.0.4-002; affected 14.0.2-012; affected 11.8.0-414; affected 12.0.1-268; affected 11.8.1-023; affected 11.8.3-021; affected 11.8.3-018; affected 12.5.1-011; affected 11.8.4-004; affected 12.5.2-007; affected 12.5.2-011; affected 14.5.0-498; affected 12.5.4-005; affected 12.5.4-011; affected 12.0.5-011; affected 14.0.3-014; affected 12.5.5-004; affected 12.5.5-005; affected 12.5.5-008; affected 14.0.4-005; affected 14.5.1-008; affected 14.5.1-016; affected 15.0.0-355; affected 15.0.0-322; affected 12.5.6-008; affected 15.1.0-287; affected 14.5.2-011; affected 15.2.0-116; affected 14.0.5-007; affected 15.2.0-164; affected 14.5.1-510; affected 12.0.2-012; affected 12.0.2-004; affected 14.5.1-607; affected 14.5.3-033; affected 15.0.1-004; affected 15.2.1-011; affected 14.5.0-673; affected 14.5.0-537; affected 12.0.1-334; affected 14.0.1-503; affected 14.0.1-053; affected 11.8.0-429; affected 14.0.1-040; affected 14.0.1-014; affected 12.5.1-043; affected 15.2.2-009; affected 15.2.3-007; affected 15.2.4-022; affected 15.2.5-011; affected 15.2.5-013; affected 14.6.0-108

CWE

CWE-305

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.