STIGQter: STIG Summary: Microsoft Windows 11 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

The Windows 11 system must use an antivirus program.

DISA Rule

SV-253264r1186372_rule

Vulnerability Number

V-253264

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

WN11-00-000045

Severity

CAT I

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Install Microsoft Defender Antivirus or a third-party antivirus solution.

Check Contents

Verify an organizationally approved antivirus solution (Microsoft Defender Antivirus, for example) is installed on the system and in use.

Verify if Microsoft Defender Antivirus is in use or enabled:

Open PowerShell.

Enter "get-service | where {$_.DisplayName -Like "*Defender*"} | Select Status,DisplayName"

Verify third-party antivirus is in use or enabled:

Open PowerShell.

Enter "get-service | where {$_.DisplayName -Like "*mcafee*"} | Select Status,DisplayName"

Enter "get-service | where {$_.DisplayName -Like "*symantec*"} | Select Status,DisplayName"

If there is no antivirus solution installed on the system, this is a finding.

Vulnerability Number

V-253264

Documentable

False

Rule Version

WN11-00-000045

Severity Override Guidance

Verify an organizationally approved antivirus solution (Microsoft Defender Antivirus, for example) is installed on the system and in use.

Verify if Microsoft Defender Antivirus is in use or enabled:

Open PowerShell.

Enter "get-service | where {$_.DisplayName -Like "*Defender*"} | Select Status,DisplayName"

Verify third-party antivirus is in use or enabled:

Open PowerShell.

Enter "get-service | where {$_.DisplayName -Like "*mcafee*"} | Select Status,DisplayName"

Enter "get-service | where {$_.DisplayName -Like "*symantec*"} | Select Status,DisplayName"

If there is no antivirus solution installed on the system, this is a finding.

Check Content Reference

M

Target Key

5471