Windows Server 2019 administrator accounts must not be enumerated during elevation.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-205714WN19-CC-000240SV-205714r958518_ruleCCI-001084medium
Description
Enumeration of administrator accounts when elevating can provide part of the logon information to an unauthorized user. This setting configures the system to always require users to type in a username and password to elevate a running application.
STIGDate
Microsoft Windows Server 2019 Security Technical Implementation Guide2025-05-23

Details

Check Text (C-205714r958518_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\Microsoft\Windows\CurrentVersion\Policies\CredUI\ Value Name: EnumerateAdministrators Type: REG_DWORD Value: 0x00000000 (0)

Fix Text (F-5979r355061_fix)

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Credential User Interface >> "Enumerate administrator accounts on elevation" to "Disabled".