Use-after-free vulnerability in the addOSPLext method in the Honeywell ScanServer ActiveX control 780.0.20.5 allows remote attackers to execute arbitrary code via a crafted HTML document.
http://www.vupen.com/english/advisories/2011/0725
http://www.securityfocus.com/bid/46930
http://secunia.com/secunia_research/2011-22/