My previous post talks about the DNS vulnerability and now the exploit codes are available and are being used already to VERY EASILY EXPLOIT DNS servers especially within an organization (typically). No one in their right mind would publish RPC over the internet, right.., right..!!??

Remember to run the WORKAROUND FIX in my previous post to ALL DOMAIN CONTROLLERS TO START WITH. A successful attack, again, on a domain controller could lead to complete risk to your AD.