Microsoft Defender AV must enable extended cloud check.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-278662 | WNDF-AV-000058 | SV-278662r1192822_rule | CCI-001170 | medium |
| Description | ||||
| When Microsoft Defender Antivirus finds a suspicious file, it can prevent the file from running while it queries the Microsoft Defender Antivirus cloud service. The default period that the file is blocked is 10 seconds. Extending the cloud block timeout period can help ensure there is enough time to receive a proper determination from the Microsoft Defender Antivirus cloud service. | ||||
| STIG | Date | |||
| Microsoft Defender Antivirus Security Technical Implementation Guide | 2026-05-08 | |||
Related Frameworks
1 mapping across 3 frameworks
Related Frameworks
SCF0 mappings
No source states a mapping between these directly.
Also reachable in 3 hops (2) 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.
- DISA STIG Benchmark (XCCDF)V2R9intersects(normalised)
- DISA CCI List2025-01-23equal to(normalised)
- SCF Secure Traceability Relationship Mapping (STRM)2026.2intersects
- DISA STIG Benchmark (XCCDF)V2R9intersects(normalised)
- DISA CCI List2025-01-23equal to(normalised)
- SCF Secure Traceability Relationship Mapping (STRM)2026.2intersects
NIST 800-530 mappings
No source states a mapping between these directly.
Also reachable in 2 hops (3) 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.
- DISA STIG Benchmark (XCCDF)V2R9intersects(normalised)
- DISA STIG Benchmark (XCCDF)V2R1our copyintersects(normalised)
- DISA STIG Benchmark (XCCDF)V2R1intersects(normalised)
- DISA CCI List2025-01-23equal to(normalised)
- DISA STIG Benchmark (XCCDF)V2R9intersects(normalised)
- DISA STIG Benchmark (XCCDF)V2R1our copyintersects(normalised)
- DISA STIG Benchmark (XCCDF)V2R1intersects(normalised)
- DISA CCI List2025-01-23equal to(normalised)
- DISA STIG Benchmark (XCCDF)V2R9intersects(normalised)
- DISA CCI List2025-01-23equal to(normalised)
CCI1 mapping
CCI-001170
1.00
- DISA STIG Benchmark (XCCDF)V2R9intersects(normalised)
Details
Check Text (C-278662r1192822_chk)
Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> MpEngine >> Configure extended cloud check is set to "Enabled" with a Policy Option value of "50"; otherwise, this is a finding.
Procedure: Use the Windows Registry Editor to navigate to the following key:
HKLM\Software\Policies\Microsoft\Windows Defender\MpEngine
Criteria: If the value "MpBafsExtendedTimeout" is REG_DWORD = 50, this is not a finding.
If the value is other than 50, this is a finding.
Fix Text (F-83101r1190753_fix)
Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> MpEngine >> Configure extended cloud check to "Enabled" with a Policy Option value of "50".