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

VBA Macros not digitally signed must be blocked in Project.

DISA Rule

SV-223376r960963_rule

Vulnerability Number

V-223376

Group Title

SRG-APP-000141

Rule Version

O365-PR-000003

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

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

Check Contents

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Project 2016 >> Project Options >> Security >> Trust Center >> VBA Macro Notification Settings is set 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\ms project\security

If the value for 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-223376

Documentable

False

Rule Version

O365-PR-000003

Severity Override Guidance

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Project 2016 >> Project Options >> Security >> Trust Center >> VBA Macro Notification Settings is set 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\ms project\security

If the value for 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