Untrusted search path vulnerability in uTorrent 2.0.3 and earlier allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse plugin_dll.dll, userenv.dll, shfolder.dll, dnsapi.dll, dwmapi.dll, iphlpapi.dll, dhcpcsvc.dll, dhcpcsvc6.dll, or rpcrtremote.dll that is located in the same folder as a .torrent or .btsearch file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6887
http://www.vupen.com/english/advisories/2010/2164