Technical Cyber Security Alert TA05-012B – The Microsoft Windows HTML Help Activex control contains a cross-domain vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary commands or code with the privileges of the user running the control. The HTML Help control can be instantiated by an HTML document loaded in Internet Explorer or any other program that uses MSHTML.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35723/TA05-012B.txt
Source: https://packetstormsecurity.com/files/35723/Technical-Cyber-Security-Alert-2005-12B.html