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

Windows Server 2025 Windows Remote Management (WinRM) client must not allow unencrypted traffic.

DISA Rule

SV-278126r1181084_rule

Vulnerability Number

V-278126

Group Title

SRG-OS-000393-GPOS-00173

Rule Version

WN25-CC-000480

Severity

CAT II

CCI(s)

• CCI-002890 - Implement organization-defined cryptographic mechanisms to protect the integrity of nonlocal maintenance and diagnostic communications.
• CCI-003123 - Implement organization-defined cryptographic mechanisms to protect the confidentiality of nonlocal maintenance and diagnostic communications.

Weight

10

Fix Recommendation

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> Allow unencrypted traffic to "Disabled".

Check Contents

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Client\

Value Name: AllowUnencryptedTraffic

Type: REG_DWORD
Value: 0x00000000 (0)

Vulnerability Number

V-278126

Documentable

False

Rule Version

WN25-CC-000480

Severity Override Guidance

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Client\

Value Name: AllowUnencryptedTraffic

Type: REG_DWORD
Value: 0x00000000 (0)

Check Content Reference

M

Target Key

5719