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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Secure Web Appliance unknown
Version Status Constraints
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 affected —

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd cve-icon cve-icon
History

Wed, 15 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 15 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability
Weaknesses CWE-305
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-04-15T16:56:35.035Z

Reserved: 2025-10-08T11:59:15.386Z

Link: CVE-2026-20152

cve-icon Vulnrichment

Updated: 2026-04-15T16:56:24.673Z

cve-icon NVD

Status : Received

Published: 2026-04-15T17:17:02.870

Modified: 2026-04-15T17:17:02.870

Link: CVE-2026-20152

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-15T19:30:12Z

Weaknesses