Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability
Summary
| CVE | CVE-2026-20152 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-04-15 17:17:02 UTC |
| Updated | 2026-04-15 17:17:02 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Problem Types: CWE-305 | CWE-305 Authentication Bypass by Primary Weakness
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | CNA | CVSSV3_1 | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.0-453 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.3-002 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.3-007 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.3-005 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.1.0-032 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.1.0-047 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.1.0-041 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.4-002 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.2-012 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.0-414 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.1-268 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.1-023 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.3-021 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.3-018 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.1-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.4-004 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.2-007 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.2-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.0-498 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.4-005 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.4-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.5-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.3-014 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.5-004 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.5-005 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.5-008 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.4-005 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.1-008 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.1-016 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.0.0-355 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.0.0-322 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.6-008 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.1.0-287 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.2-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.0-116 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.5-007 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.0-164 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.1-510 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.2-012 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.2-004 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.1-607 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.3-033 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.0.1-004 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.1-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.0-673 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.5.0-537 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.0.1-334 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.1-503 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.1-053 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 11.8.0-429 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.1-040 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.0.1-014 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 12.5.1-043 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.2-009 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.3-007 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.4-022 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.5-011 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 15.2.5-013 | Not specified |
| CNA | Cisco | Cisco Secure Web Appliance | affected 14.6.0-108 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-au... | [email protected] | sec.cloudapps.cisco.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Exploits
CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
There are currently no legacy QID mappings associated with this CVE.