Internet Explorer exploit released
Microsoft has not yet patched this hole. I suggest going to the fixity site mentioned in the article and patching you system even if you don't use IE on a daily basis. They'll probably get it into next week's patch Tuesday updates but better to be safe.
Public release of IE exploit could spark widespread attacks
An exploit for a vulnerability that affects all versions of Internet Explorer and has yet to be patched by Microsoft has been integrated into the open-source Metasploit penetration testing tool, a move that might spur an increasing number of attacks targeting the flaw.