Directory traversal vulnerability in download.cgi in EZFactory KDDI Download CGI 1.x allows remote attackers to read and download arbitrary files via a .. (dot dot) in the name parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35323
http://www.vupen.com/english/advisories/2007/2472
http://www.au.kddi.com/ezfactory/tec/dlcgi/info.html