The built-in guest account must be renamed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-220912 | WN10-SO-000025 | SV-220912r991589_rule | CCI-000366 | medium |
| Description | ||||
| The built-in guest account is a well-known user account on all Windows systems and, as initially installed, does not require a password. This can allow access to system resources by unauthorized users. Renaming this account to an unidentified name improves the protection of this account and the system. | ||||
| STIG | Date | |||
| Microsoft Windows 10 Security Technical Implementation Guide | 2025-02-25 | |||
Details
Check Text (C-220912r991589_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 "Accounts: Rename guest account" is set to "Guest", this is a finding.
Fix Text (F-22616r555222_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Rename guest account" to a name other than "Guest".