CVE-2025-54982 | BDVDB-2026-288528 Detail

ZscalerAuthentication Server

Description#

An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.

CAPEC-114 Authentication Abuse

No public exploit known

9.6 Critical

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 36.0.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Not classified

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

9.6 Critical

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).