CVE-2006-3898
Microsoft Internet Explorer 6.0 on Windows XP SP2 allows remote attackers to cause a denial of service (application crash) by calling the Click method of the Internet.HHCtrl.1 ActiveX object before initializing the URL, which triggers a null dereference.
Date published : 2006-07-27
http://www.securityfocus.com/bid/19109
http://browserfun.blogspot.com/2006/07/mobb-22-internethhctrl-click.html