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The "Modify firmware environment values" user right must only be assigned to the Administrators group.


Overview

Finding ID Version Rule ID IA Controls Severity
V-253502 WN11-UR-000140 SV-253502r829590_rule Medium
Description
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a DoS.
STIG Date
Microsoft Windows 11 Security Technical Implementation Guide 2022-08-31

Details

Check Text ( C-56955r829588_chk )
Verify the effective setting in Local Group Policy Editor.
Run "gpedit.msc".

Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment.

If any groups or accounts other than the following are granted the "Modify firmware environment values" user right, this is a finding:

Administrators
Fix Text (F-56905r829589_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Modify firmware environment values" to only include the following groups or accounts:

Administrators