Microsoft Defender AV must be configured to turn on e-mail scanning.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-213451WNDF-AV-000027SV-213451r823072_ruleCCI-001170medium
Description
This policy setting allows the configuration of e-mail scanning. When e-mail scanning is enabled, the engine will parse the mailbox and mail files according to their specific format in order to analyze the mail bodies and attachments. Several e-mail formats are currently supported, for example: pst (Outlook), dbx mbx mime (Outlook Express), binhex (Mac). If this setting is enabled, e-mail scanning will be enabled. If this setting is disabled or not configured, e-mail scanning will be disabled.
STIGDate
Microsoft Defender Antivirus Security Technical Implementation Guide2022-04-08

Related Frameworks

2 paths across 2 frameworks
NIST 800-531 mapping
  • DISA · 2 · disa_xccdf · related
  • DISA · 2025-01-23 · disa_cci_list · equivalent
CCI1 mapping
CCI-001170
1.00
  • DISA · 2 · disa_xccdf · related

Details

Check Text (C-213451r823072_chk)

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Scan >> "Turn on e-mail scanning" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender\Scan Criteria: If the value "DisableEmailScanning" is REG_DWORD = 0, this is not a finding.

Fix Text (F-14674r823071_fix)

Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Scan >> "Turn on e-mail scanning" to "Enabled".