Local users on domain-joined computers must not be enumerated.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-253379 | SRG-OS-000095-GPOS-00049 | WN11-CC-000130 | SV-253379r958478_rule | 2026-02-12 | 2 |
Description
The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to authorized personnel.
ℹ️ Check
This requirement is applicable to domain-joined systems, for standalone systems this is NA.
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\System\
Value Name: EnumerateLocalUsers
Value Type: REG_DWORD
Value: 0
✔️ Fix
This requirement is applicable to domain-joined systems, for standalone systems this is NA.
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Enumerate local users on domain-joined computers" to "Disabled".