Internet Explorer - Execution of any programs via onload
This demo "only" crashes Internet Explorer. If your browser crashes when "test" is clicked, a Web site may, however, also be able to install malware on your system. If your browser does not crash, the demo did not work properly.
In the MS05-054 Microsoft has published a patch to remedy this vulnerability.
To protect yourself, you can disable active scripting in the security settings, but this means that many Web pages will not work properly any more. The Internet Explorer is the only browser affected by this problem.