STIGQter: STIG Summary: Microsoft Office 365 ProPlus Security Technical Implementation Guide Version: 3 Release: 5 Benchmark Date: 01 Apr 2026:

Publisher must disable all unsigned VBA macros.

DISA Rule

SV-223392r1016172_rule

Vulnerability Number

V-223392

Group Title

SRG-APP-000131

Rule Version

O365-PU-000003

Severity

CAT II

CCI(s)

• CCI-003992 - Prevent the installation of organization-defined software and firmware components without verification that the component has been digitally signed using a certificate that is recognized and approved by the organization.

Weight

10

Fix Recommendation

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Publisher 2016 >> Security >> Trust Center >> VBA Macro Notification Settings >> VBA Macro Notification Settings must be set to "Enabled" and "Disable all except digitally signed macros".

Check Contents

Set policy value for User Configuration >> Administrative Templates >> Microsoft Publisher 2016 >> Security >> Trust Center >> VBA Macro Notification Settings >> VBA Macro Notification Settings to "Enabled" "Disable all except digitally signed macros".

Use the Windows Registry Editor to navigate to the following key:

HKCU\software\policies\microsoft\office\16.0\publisher\security

If the value vbawarnings is REG_DWORD = 3, this is not a finding. A value of REG_DWORD = 4 is also acceptable. If the registry key does not exist or is not configured properly, this is a finding.

Vulnerability Number

V-223392

Documentable

False

Rule Version

O365-PU-000003

Severity Override Guidance

Set policy value for User Configuration >> Administrative Templates >> Microsoft Publisher 2016 >> Security >> Trust Center >> VBA Macro Notification Settings >> VBA Macro Notification Settings to "Enabled" "Disable all except digitally signed macros".

Use the Windows Registry Editor to navigate to the following key:

HKCU\software\policies\microsoft\office\16.0\publisher\security

If the value vbawarnings is REG_DWORD = 3, this is not a finding. A value of REG_DWORD = 4 is also acceptable. If the registry key does not exist or is not configured properly, this is a finding.

Check Content Reference

M

Target Key

4099