CVE-2023-41971: Windows ZCC Upgrade DoS And Privilege Escalation Through RPC Control

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-02 · updated 2026-06-17
Weakness: CWE-59

Description

An Improper Link Resolution Before File Access ('Link Following') vulnerability in Zscaler Client Connector on Windows allows a system file to be overwritten.This issue affects Client Connector on Windows: before 3.7.

Affected products

Zscaler Client Connector: before 3.7 — fixed in 3.7

How to fix

Upgrade to a fixed version: Zscaler Client Connector 3.7. Check the vendor advisory for mitigations.

References

https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021??applicable_category=windows&applicable_version=3.7
https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021??applicable_category=windows&applicable_version=3.7

Get alerted when CVE-2023-41971 or the next vulnerability affects your stack