Please upgrade if you can to the latest version. www.microsoft.com/ie
If you are running a older version of Windows that you cannot upgrade past IE 9, please run this Microsoft Fix-It till it is patched. But even if you are on IE 8 and can upgrade to IE 9 please do.
For more info about the vulnerability: Microsoft Security Bulletin MS13-038 – Critical Security Update for Internet Explorer (2847204)
Better yet, if you cannot upgrade past IE 9, please try Firefox.