Buffer overflow in ext.dll in BadBlue 2.55 allows remote attackers to execute arbitrary code via a long mfcisapicommand parameter.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0596
http://www.securityfocus.com/bid/12673
http://secunia.com/advisories/14405
http://archives.neohapsis.com/archives/fulldisclosure/2005-02/0599.html