Earlier this week, Microsoft released Microsoft Security Bulletin MS10-046, which is the patch to fix this particular vulnerability. This "out of band" patch came a full week before the regularly scheduled update, due to concern for customers' security. Everyone who has Automatic Updates turned on will already have the patch installed and their system is secured against this particular threat. The only people who need be concerned are those who check for updates manually and those who are still running Windows 2000 or XP Service Pack 2 or earlier, as they are no longer supported by Microsoft.
MS10-046I got that in one of the security newsletter that I subscribe to. I'm posting it here as it shows how the Microsoft of 1998 is very different from the Microsoft of today. They still can't manage to change their image though... I just don't get it.