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The built-in guest account must be renamed.


Overview

Finding ID Version Rule ID IA Controls Severity
V-1114 WN12-SO-000006 SV-52856r1_rule 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
Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide 2020-06-16

Details

Check Text ( C-47173r2_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 not set to a value other than "Guest", this is a finding.
Fix Text (F-45782r1_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".