The Users module in vTiger CRM 4.2 and earlier allows remote attackers to execute arbitrary PHP code via an arbitrary file in the templatename parameter, which is passed to the eval function.
http://www.vupen.com/english/advisories/2005/2569
http://www.securityfocus.com/bid/15569
http://www.securityfocus.com/archive/1/417711/30/0/threaded
http://securitytracker.com/id?1015274