ZIA, ZPA and connectors
CVE-2023-28801: Improper SAML signature verification
An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.6
EPSS0.39%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| ZIA Admin Portal 6.2 | 6.2 (current) or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.