Soti Pocket Controller-Professional 5.0 allows remote attackers to turn off, reboot, or hard reset a PDA via a series of initialization, command, and reset packets sent to port 5492.
http://www.vupen.com/english/advisories/2005/2821
http://www.securityfocus.com/bid/15775/discuss
http://www.securityfocus.com/archive/1/418963/100/0/threaded
http://www.airscanner.com/security/pocketcontroller.htm