CVE-2023-28805: Zscaler Client Connector

Critical severity, CVSS 9.8. EPSS: 0.3% chance of exploitation in the next 30 days.

An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105

Affected products

• Zscaler Client Connector: before 1.4.0.105 (fixed in 1.4.0.105)

Published 2023-10-23. Last modified 2026-06-17.