The web browser plugin for Ubisoft Uplay PC before 2.0.4 allows remote attackers to execute arbitrary programs via the -orbit_exe_path command line argument.
http://www.exploit-db.com/exploits/20321
http://www.bbc.com/news/technology-19053453
http://seclists.org/fulldisclosure/2012/Jul/375
http://forums.ubi.com/showthread.php/699940-Uplay-PC-Patch-2-0-4-Security-fix