Heap-based buffer overflow in uTorrent 1.6 allows remote attackers to execute arbitrary code via a torrent file with a crafted announce header.
https://www.exploit-db.com/exploits/3296
https://exchange.xforce.ibmcloud.com/vulnerabilities/32455
http://www.vupen.com/english/advisories/2007/0571
http://www.securitytracker.com/id?1017648
http://www.securityfocus.com/archive/1/460346/100/0/threaded