Windows Server 2019 Windows Remote Management (WinRM) service must not use Basic authentication.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
highV-205713SRG-OS-000125-GPOS-00065WN19-CC-000500SV-205713r958510_rule2025-02-253
Description
Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.
ℹ️ Check
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: AllowBasic Type: REG_DWORD Value: 0x00000000 (0)
✔️ Fix
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Allow Basic authentication" to "Disabled".