A-CART 2.0 stores the acart2_0.mdb file under the web document root with insufficient access control, which allows remote attackers to obtain username and password information.
http://www.vupen.com/english/advisories/2006/2207
http://www.securityfocus.com/bid/5597
http://www.securityfocus.com/archive/1/436257/100/0/threaded
http://www.securiteam.com/windowsntfocus/5JP081F8AY.html