This indicates an attempt to exploit a memory corruption vulnerability in Microsoft Internet Explorer.
Remote attackers may be able to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability, in that the victim must visit a malicious page.
Internet Explorer 5.01 SP4
Internet Explorer 6
Internet Explorer 7
System compromise: arbitrary code execution.
Microsoft has issued an update to correct this vulnerability. More details can be found at: