Local users on domain-joined computers must not be enumerated.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-220820 | SRG-OS-000095-GPOS-00049 | WN10-CC-000130 | SV-220820r958478_rule | 2025-02-25 | 3 |
| 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 or nondomain-joined 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 or nondomain-joined systems, this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Enumerate local users on domain-joined computers" to "Disabled". |