The Windows Remote Management (WinRM) service must not allow unencrypted traffic.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-220866SRG-OS-000393-GPOS-00173WN10-CC-000350SV-220866r958848_rule2025-02-253
Description
Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.
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: AllowUnencryptedTraffic Value Type: REG_DWORD Value: 0
✔️ Fix
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Allow unencrypted traffic" to "Disabled".