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

Windows Server 2025 systems must have Unified Extensible Firmware Interface (UEFI) firmware and be configured to run in UEFI mode, not Legacy BIOS.

DISA Rule

SV-278031r1182046_rule

Vulnerability Number

V-278031

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

WN25-00-000460

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure UEFI firmware to run in UEFI mode, not Legacy BIOS mode.

Check Contents

Devices that have UEFI firmware must run in UEFI mode.

Verify the system firmware is configured to run in UEFI mode, not Legacy BIOS.

Run "System Information".

Under "System Summary", if "BIOS Mode" does not display "UEFI", this is a finding.

Vulnerability Number

V-278031

Documentable

False

Rule Version

WN25-00-000460

Severity Override Guidance

Devices that have UEFI firmware must run in UEFI mode.

Verify the system firmware is configured to run in UEFI mode, not Legacy BIOS.

Run "System Information".

Under "System Summary", if "BIOS Mode" does not display "UEFI", this is a finding.

Check Content Reference

M

Target Key

5719