Windows Server 2025 must not allow anonymous SID/Name translation.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-278215 | WN25-SO-000210 | SV-278215r1181351_rule | CCI-000366 | high |
| Description | ||||
| Allowing anonymous SID/Name translation can provide sensitive information for accessing a system. Only authorized users must be able to perform such translations. | ||||
| STIG | Date | |||
| Microsoft Windows Server 2025 Security Technical Implementation Guide | 2026-02-20 | |||
Details
Check Text (C-278215r1181351_chk)
Verify the effective setting in Local Group Policy Editor.
Run gpedit.msc.
Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options.
If the value for "Network access: Allow anonymous SID/Name translation" is not set to "Disabled", this is a finding.
Fix Text (F-82650r1181350_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Allow anonymous SID/Name translation to "Disabled".