It was just a matter of time after the premature release of details on the attack: attack code for the big DNS vulnerability patched in many products earlier this month has been released.

The exploit code allows for the insertion of malicious records into the cache of targeted DNS servers. It has been posted to Metasploit whose creator, HD Moore, wrote the exploit with a researcher named "|)ruid " from the Computer Academic Underground.

If you're responsible for a DNS server—not just Windows, but all the major ones—and have not applied this patch, you and your users are at great risk. Patch now.