Client Connector
CVE-2023-28804: Linux ZCC allows unsigned updates, allowing elevated Code Execution
An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing binaries.This issue affects Linux Client Connector: before 1.4.0.105
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 8.2
EPSS0.24%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 0 | 1.4.0.105 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing binaries.This issue affects Linux Client Connector: before 1.4.0.105
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.