Alt-N WebAdmin 3.2.3 and 3.2.4 running with MDaemon 9.0.5, and possibly earlier, allow remote authenticated domain administrators to change a global administrator's password and gain privileges via the userlist.wdm file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28489
http://www.vupen.com/english/advisories/2006/3333
http://www.securityfocus.com/bid/19631
http://www.securityfocus.com/archive/1/444012/100/0/threaded
http://securityreason.com/securityalert/1455
http://secunia.com/advisories/21558
http://lists.grok.org.uk/pipermail/full-disclosure/2006-August/048959.html