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CVE-2021-31838

Command injection through environment variable in MVISION EDR

CRITICAL
9.1
CVSS Score
Published: June 29, 2021 at 09:45 AM UTC
Updated: June 17, 2026 at 03:52 AM UTC
1 product affected across 1 vendorMvision EDR

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Severity
CRITICAL9.1
Exploit prediction
EPSS 2%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mvision EDR· McAfee
95%
v < 3.4.0
Affected range stops below 3.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRM
Source: [email protected]
https://kc.mcafee.com/corporate/index?page=content&id=SB10342

CVSS

9.1CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-78

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