The new Internet Explorer exploit that affected IE6+ on XP to 8.1 and server editions has a new out of band patch available. For those with automatic updates, you need not worry – it'll come through automatically. For those without automatic updates enabled, be sure to get your machine patched ASAP.
We have made the decision to issue a security update for Windows XP users. Windows XP is no longer supported by Microsoft, and we continue to encourage customers to migrate to a modern operating system, such as Windows 7 or 8.1. Additionally, customers are encouraged to upgrade to the latest version of Internet Explorer, IE 11.