Windows Server 2019 Windows Remote Management (WinRM) service must not store RunAs credentials.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-205810SRG-OS-000373-GPOS-00157WN19-CC-000520SV-205810r1051082_rule2025-02-253
Description
Storage of administrative credentials could allow unauthorized access. Disallowing the storage of RunAs credentials for Windows Remote Management will prevent them from being used with plug-ins. Satisfies: SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00156
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: DisableRunAs Type: REG_DWORD Value: 0x00000001 (1)
✔️ Fix
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Disallow WinRM from storing RunAs credentials" to "Enabled".