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Status published
Critical
CVE-2025-54982
SAML 2.0 Public Key Validation Issue
Vulnerability Description
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Richard Warren, AmberWolf
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Affected Vendor
Zscaler
View all reports →Affected Software
Authentication Server
Vulnerable Versions:
0
Timeline
Official Publish:
August 5th, 2025
Last Modified:
February 26th, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N