Original URL: http://www.theregister.co.uk/2008/12/22/housecall_vuln/
HouseCall throws a sickie
ActiveX control gives online scanner man flu
Users of Trend Micro's HouseCall  antivirus scanner need to upgrade following the discovery of a potentially serious security bug.
Attentive readers will have have already guessed the vulnerability involves a problem with an ActiveX control, specifically versions 220.127.116.118 and 18.104.22.1688 of the HouseCall ActiveX Control. Users need to upgrade to version 22.214.171.1245.
Successful exploitation of the flaw creates a mechanism for hackers to inject hostile code onto vulnerable systems, security notification firm Secunia - which discovered the bug and published an advisory on Sunday - explains: 
"The vulnerability is caused by a use-after-free error in the HouseCallActiveX control (Housecall_ActiveX.dll). This can be exploited to dereference previously freed memory by tricking the user into opening a web page containing a specially crafted "notifyOnLoadNative()"callback function." ®