CVE-2021-31838: McAfee Mvision Edr

Critical severity, CVSS 9.1. EPSS: 2.1% chance of exploitation in the next 30 days.

A command injection vulnerability in MVISION EDR (MVEDR) prior to 3.4.0 allows an authenticated MVEDR administrator to trigger the EDR client to execute arbitrary commands through PowerShell using the EDR functionality 'execute reaction'.

Affected products

• McAfee Mvision Edr: before 3.4.0 (fixed in 3.4.0)

Published 2021-06-29. Last modified 2026-06-17.