CVE-2021-26736: Zscaler Client Connector

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the Zscaler Client Connector Installer and Uninstaller for Windows prior to 3.6 allowed execution of binaries from a low privileged path. A local adversary may be able to execute code with SYSTEM privileges.

Affected products

• Zscaler Client Connector: before 3.6 (fixed in 3.6)

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