display.cgi in Aborior Encore WebForum allows remote to execute arbitrary commands via shell metacharacters in the file variable.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15725
http://www.securitytracker.com/id?1009652
http://www.securityfocus.com/archive/1/437978/100/0/threaded
http://www.securityfocus.com/archive/1/437813/100/0/threaded