CVE-2025-54982
SAML 2.0 Public Key Validation Issue
CVSS Score
9.6
EPSS Score
0.0%
EPSS Percentile
0th
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.
| CWE | CWE-347 |
| Vendor | zscaler |
| Product | authentication server |
| Published | Aug 5, 2025 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Zscaler / Authentication Server
0 < 6.2r
References
Credits
Richard Warren, AmberWolf