The built-in guest account is not disabled.

From Windows 2003 Domain Controller Security Technical Implementation Guide

Associated with IA controls: IAAC-1

SV-29655r1_rule The built-in guest account is not disabled.

Vulnerability discussion

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. This account is a member of the Everyone user group and has all the rights and permissions associated with that group, which could subsequently provide access to system resources to anonymous users.

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Fix text

Configure the system to disable the built-in guest Account.

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