The built-in guest account must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1113	WN08-SO-000003	SV-48034r1_rule		Medium

Description
A system faces an increased vulnerability threat if the built-in guest account is not disabled. This account is a known account that exists on all Windows systems and cannot be deleted. This account is initialized during the installation of the operating system with no password assigned.

STIG	Date
Windows 8/8.1 Security Technical Implementation Guide	2018-02-12

Details

Check Text ( C-44772r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for "Accounts: Guest account status" is not set to "Disabled", this is a finding.

Fix Text (F-41172r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Accounts: Guest account status" to "Disabled".