The borrado function in modules/Your_Account/index.php in Tru-Zone Nuke ET 3.4 before fix 7 does not verify that account deletion requests come from the account owner, which allows remote authenticated users to delete arbitrary accounts via a modified cookie.
https://exchange.xforce.ibmcloud.com/vulnerabilities/33483
http://www.vupen.com/english/advisories/2007/1285
http://www.securityfocus.com/bid/23354
http://truzone.org/modules.php?name=News&file=article&sid=1613
http://truzone.org/modules.php?name=Forums&file=viewtopic&p=287012