A remote IE exploit with implementations is currently in the wild. From the article: 'Exploit code for a critical flaw in fully patched versions of Microsoft Corp.'s Internet Explorer browser has been released on the Internet, putting millions of Web surfers at risk of computer hijack attacks.' Aparently all you have to do is browse the page to be affected. There is no patch, but since it is a javascript exploit, you can work around it by disabling javascript.