This indicates an attack attempt against an integer overflow vulnerability in Microsoft Internet Explorer.
The vulnerability is caused when processing a malformed DataSourceControl ActiveX object with a negative "getDataMemberName" property. It allows remote attackers to cause a denial of service (crash) via a large negative integer argument to the getDataMemberName method of an OWC11.DataSourceControl.11 object, which leads to an integer overflow and a null dereference.
Microsoft Internet Explorer 6 SP2
Microsoft Internet Explorer 6 SP1
Microsoft Internet Explorer 6
System Compromise: Remote attackers can gain control of vulnerable systems.
Upgrade to the latest version, available from the website.