CVE-2022-3859 Privilege escalation in Trellix Agent

Medium 6.7 Published 30 Nov 2022 Updated 23 Apr 2025

An attacker with admin access can elevate privileges to System by placing a malicious DLL in a restricted folder due to an uncontrolled search path.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-3859?

CVE-2022-3859 is a medium-severity vulnerability in Trellix Agent, published on 30 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An uncontrolled search path vulnerability exists in Trellix Agent (TA) for Windows in versions prior to 5.7.8. This allows an attacker with admin access, which is required to place the DLL in the restricted Windows System folder, to elevate their privileges to System by placing a malicious DLL there.

Weakness: CWE-427

Which versions are affected by CVE-2022-3859?

It affects 1 product.

Products include Trellix Agent.

How do I fix CVE-2022-3859?

No fix has been published for CVE-2022-3859 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-3859 being exploited?

There is no known exploitation of CVE-2022-3859 in the wild and no public exploit code.

Sources

Also known as GHSA-75q5-4hc3-3q65.