Microsoft Windows Server 2025

Windows Server 2025 Windows Remote Management (WinRM) client must not use Basic authentication

STIG ID: WN25-CC-000470 | SRG: SRG-OS-000125-GPOS-00065 | Severity: High | CCI: CCI-000877 | Vulnerability ID: V-278125

Description

Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.

Check

C-82655r1181079_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\Client\

Value Name: AllowBasic

Type: REG_DWORD
Value: 0x00000000 (0)

Fix

F-82560r1181080_fix

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