ZixForum 1.14 and earlier stores sensitive information under the web root with insufficient access control, which allows remote attackers to download a database containing passwords via a direct request for Zixforum.mdb. NOTE: a followup post suggests that this issue only occurs if the administrator does not properly follow installation directions.
http://www.securityfocus.com/archive/1/458135/100/100/threaded
http://www.securityfocus.com/archive/1/457950/100/0/threaded