Client Connector
CVE-2024-23456: Signature validation issue leads to Anti-Tampering bypass
Anti-tampering can be disabled under certain conditions without signature validation.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 7.8
EPSS0.23%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 |
|---|---|
| Client Connector (Windows) 0 | 4.2.0.190 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Anti-tampering can be disabled under certain conditions without signature validation. This affects Zscaler Client Connector <4.2.0.190 with anti-tampering enabled.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.