The shtml.exe component of Microsoft FrontPage 2000 Server Extensions 1.1 allows remote attackers to cause a denial of service in some components by requesting a URL whose name includes a standard DOS device name.
http://www.securityfocus.com/bid/1608
http://msdn.microsoft.com/workshop/languages/fp/2000/sr12.asp
http://archives.neohapsis.com/archives/bugtraq/2000-08/0288.html