Microsoft Windows Server 2025

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

STIG ID: WN25-CC-000510 | SRG: SRG-OS-000393-GPOS-00173 | Severity: Medium | CCI: CCI-002890 | Vulnerability ID: V-278129

Description

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.

Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174

Check

C-82659r1181091_chk

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\Service\

Value Name: AllowUnencryptedTraffic

Type: REG_DWORD
Value: 0x00000000 (0)

Fix

F-82564r1181092_fix

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