Client Connector
CVE-2023-28798: Out-of-bounds write to heap in pacparser
An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 6.5
EPSS0.43%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 (MacOS) 0 | 3.7.0.172 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.