CVE-2025-54982
Critical
Description
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.
SeverityCritical
CVSS9.6
Exploit probability—
ProductAuthentication Server
PublishedAug 5, 2025
First seenAug 5, 2025
Weakness typeCWE-347CWE-347
How to fix
Update
- Zscaler Authentication Server6.2r or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Zscaler Authentication Server | v < 6.2r | 6.2r |
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