The CERN Image Map Dispatcher (htimage.exe) in Microsoft FrontPage allows remote attackers to determine the existence, and possibly partial contents, of arbitrary files under the web root via a relative pathname in the PATH_INFO.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2007-3101
http://www.securityfocus.com/archive/1/470458/100/0/threaded