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Microsoft Defender AV must be configured to block the Potentially Unwanted Application (PUA) feature.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-213426WNDF-AV-000001SV-213426r961197_ruleCCI-001243high
Description
After enabling this feature, PUA protection blocking takes effect on endpoint clients after the next signature update or computer restart. Signature updates take place daily under typical circumstances. PUA will be blocked and automatically quarantined.
STIGDate
Microsoft Defender Antivirus Security Technical Implementation Guide2026-05-08

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (15) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
CRY-01.1Alternate Physical Protection
1.00
CRY-03Transmission Confidentiality
1.00
CRY-04Transmission Integrity
1.00
CRY-05Encrypting Data At Rest
1.00
DCH-01Data Protection
1.00
IAC-21Least Privilege
1.00
END-04Malicious Code Protection (Anti-Malware)
0.50
END-04.1Automatic Antimalware Signature Updates
0.50

+5 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (8) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AU-12Audit Record Generation
1.00
AU-3Content of Audit Records
1.00
SC-7(9)Restrict Threatening Outgoing Communications Traffic
1.00
SI-3Malicious Code Protection
1.00
SI-4(1)System-wide Intrusion Detection System
1.00
SI-4(22)Unauthorized Network Services
1.00
SI-4(5)System-generated Alerts
1.00
SI-6Security and Privacy Function Verification
1.00
NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.14.1
1.00
3.14.2
1.00
3.14.3
1.00
3.14.4
1.00
3.14.5
1.00
CCI1 mapping
CCI-001243
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (7) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.DS-01
1.00
PR.DS-02
1.00
PR.DS-10
1.00
DE.CM-09
0.50
ID.RA-01
0.50
ID.RA-08
0.50
PR.PS-02
0.50

Who does this work

8 NICE work roles and 7 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-213426r961197_chk)

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> "Configure detection for potentially unwanted applications" is set to "Enabled" and "Block". Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender If the value "PUAProtection" does not exist, this is a finding. If the value "PUAProtection" is REG_DWORD = 1, this is not a finding.

Fix Text (F-14649r823023_fix)

Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> "Configure Detection for Potentially Unwanted Applications" to "Enabled" and "Block".