CVE-2021-26734: Zscaler Client Connector

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

Zscaler Client Connector Installer on Windows before version 3.4.0.124 improperly handled directory junctions during uninstallation. A local adversary may be able to delete folders in an elevated context.

Affected products

• Zscaler Client Connector: before 3.4.0.124 (fixed in 3.4.0.124)

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