What is CVE-2022-3859?

CVE-2022-3859 is a medium-severity vulnerability in Trellix Agent, classified under Uncontrolled Search Path Element. CVSS score: 6.7/10. Published 2022-11-30.

How severe is CVE-2022-3859?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Trellix Agent

CVE-2022-3859

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.

Published 2022-11-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (9.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Trellix Agent
Trellix Agent — versions 5.x

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

kcm.trellix.com/corporate/index (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-3859?: CVE-2022-3859 is a medium-severity vulnerability in Trellix Agent, classified under Uncontrolled Search Path Element. CVSS score: 6.7/10. Published 2022-11-30.
How severe is CVE-2022-3859?: Medium severity. CVSS v3 base score is 6.7 out of 10.