---
id: CVE-2026-107171
title: >-
  An Hardcoded Cryptographic Key vulnerability existed in Trellix Agent 5.8.4
  via mfecryptc.dll leads to Database Decryption by Regular Users.
summary: >-
  An Hardcoded Cryptographic Key vulnerability existed in Trellix Agent 5.8.4
  via mfecryptc.dll leads to Database Decryption by Regular Users.
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-321
vendor: Trellix
product: Trellix Agent
affected:
  - agent 5.8.4
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T15:53:08.287'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107171'
references:
  - url: 'https://support.trellix.com/s/article/000015866'
    label: trellixpsirt@trellix.com
tags:
  - nvd
  - cve.org
epss: 0.00126
epssPercentile: 0.02345
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-14T15:57:27.562383Z'
cvssSource: cna
ingestedAt: '2026-10-14T08:23:04.341Z'
---

## Overview

An Hardcoded Cryptographic Key vulnerability existed in Trellix Agent 5.8.4 via mfecryptc.dll leads to Database Decryption by Regular Users.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.