What’s Vulnerable › Vulnerabilities
CVE-2025-54982: SAML 2.0 Public Key Validation Issue
- Severity: critical (CVSS 9.6 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-08-05 · updated 2026-06-17
- Weakness: CWE-347
Description
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.
Affected products
- Zscaler Authentication Server: before 6.2r — fixed in 6.2r
How to fix
Upgrade to a fixed version: Zscaler Authentication Server 6.2r. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2025-54982 or the next vulnerability affects your stack