CVE-2023-28797: LPE using arbitrary file delete with Symlinks

Severity: high (CVSS 7.3 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: 2023-10-23 · updated 2026-06-17
Weakness: CWE-59

Description

Zscaler Client Connector for Windows before 4.1 writes/deletes a configuration file inside specific folders on the disk. A malicious user can replace the folder and execute code as a privileged user.

Affected products

Zscaler Client Connector: before 4.1 — fixed in 4.1

How to fix

Upgrade to a fixed version: Zscaler Client Connector 4.1. Check the vendor advisory for mitigations.

References

https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022
https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022

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