STIGQter STIGQter: STIG Summary: Microsoft Windows Server 2025 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

Windows Server 2025 must preserve zone information when saving attachments.

DISA Rule

SV-278240r1182207_rule

Vulnerability Number

V-278240

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

WN25-UC-000010

Severity

CAT II

CCI(s)

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 the registry Value Name below does not exist, this is not a finding.

If it exists and is configured with a value of "2", this is not a finding.

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-278240

Documentable

False

Rule Version

WN25-UC-000010

Severity Override Guidance

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

If the registry Value Name below does not exist, this is not a finding.

If it exists and is configured with a value of "2", this is not a finding.

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

5719