What’s Vulnerable › Vulnerabilities
CVE-2023-28806: Signature validation error in DLL allows disabling anti-tampering protection
- Severity: medium (CVSS 6.5 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: 2024-08-06 · updated 2026-06-17
- Weakness: CWE-347
Description
An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to disable anti-tampering. This issue affects Client Connector on Windows <4.2.0.190.
Affected products
- Zscaler Client Connector: before 4.2.0.190 — fixed in 4.2.0.190
How to fix
Upgrade to a fixed version: Zscaler Client Connector 4.2.0.190. Check the vendor advisory for mitigations.
References
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