STIGQter: STIG Summary: Microsoft Windows Server 2025 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

Windows Server 2025 User Account Control (UAC) must run all administrators in Admin Approval Mode, enabling UAC.

DISA Rule

SV-278238r1182203_rule

Vulnerability Number

V-278238

Group Title

SRG-OS-000373-GPOS-00156

Rule Version

WN25-SO-000440

Severity

CAT II

CCI(s)

• CCI-004895 - Permit users to invoke the trusted communications path for communications between the user and the organization-defined security functions, including at a minimum, authentication and re-authentication.

Weight

10

Fix Recommendation

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Run all administrators in Admin Approval Mode to "Enabled".

Check Contents

UAC requirements are not applicable for Server Core installations (this is the default installation option for Windows Server 2025 versus Server with Desktop Experience).

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\

Value Name: EnableLUA

Value Type: REG_DWORD
Value: 0x00000001 (1)

Vulnerability Number

V-278238

Documentable

False

Rule Version

WN25-SO-000440

Severity Override Guidance

UAC requirements are not applicable for Server Core installations (this is the default installation option for Windows Server 2025 versus Server with Desktop Experience).

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\

Value Name: EnableLUA

Value Type: REG_DWORD
Value: 0x00000001 (1)

Check Content Reference

M

Target Key

5719