STIG V-278121 | Windows Server 2025 must disable the ...

Microsoft Windows Server 2025

Windows Server 2025 must disable the Windows Installer Always install with elevated privileges option

STIG ID: WN25-CC-000430 | SRG: SRG-OS-000362-GPOS-00149 | Severity: High | CCI: CCI-003980 | Vulnerability ID: V-278121

Description

Standard user accounts must not be granted elevated privileges. Enabling Windows Installer to elevate privileges when installing applications can allow malicious persons and applications to gain full control of a system.

Check

C-82651r1181067_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\Installer\

Value Name: AlwaysInstallElevated

Type: REG_DWORD
Value: 0x00000000 (0)

Fix

F-82556r1181068_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> Always install with elevated privileges to "Disabled".