Important: Check MS08-067 and Apply the Update!
This vulnerability is marked as “Critical”, and nearly all windows product are affected.
Although it was reported privately to Microsoft and no expolit code leaked now, it is always safer to take action immediately. If you don’t do that, later hackers and worms might be able to attack your machines through RPC service from Internet, and take full control of your machine.
If automatic update is turned on, you will receive the update now. Apply it, make a restart.
For IT Pros, you need to check this for details:
http://www.microsoft.com/technet/security/Bulletin/MS08-067.mspx
In case you need to download the files manually:
Although this is only a security fix for the OS, as a SharePoint Developer/Administrator, you will always be responsibile for the security issues. So let’s prevent things from happen at the beginning.