STIGQter: STIG Summary: Microsoft Windows 11 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

Zone information must be preserved when saving attachments.

DISA Rule

SV-253478r991589_rule

Vulnerability Number

V-253478

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

WN11-UC-000020

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

The default behavior is for Windows to mark file attachments with their zone information.

To correct this, configure the policy value for User Configuration >> Administrative Templates >> Windows Components >> Attachment Manager >> "Do not preserve zone information in file attachments" to "Not Configured" or "Disabled".

Check Contents

The default behavior is for Windows to mark file attachments with their zone information.

If it exists and is configured with a value of "1", this is a finding.

Registry Hive: HKEY_CURRENT_USER
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\

Value Name: SaveZoneInformation

Value Type: REG_DWORD
Value: 0x00000002 (2) (or if the Value Name does not exist)

Vulnerability Number

V-253478

Documentable

False

Rule Version

WN11-UC-000020

Severity Override Guidance

The default behavior is for Windows to mark file attachments with their zone information.

If it exists and is configured with a value of "1", this is a finding.

Registry Hive: HKEY_CURRENT_USER
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\

Value Name: SaveZoneInformation

Value Type: REG_DWORD
Value: 0x00000002 (2) (or if the Value Name does not exist)

Check Content Reference

M

Target Key

5471