Based on notifications received from Microsoft we are upgrading the rating of MS11-020 (KB 2508429, CVE-2011-0661) from Critical to PATCH NOW.  See: http://isc.sans.edu/diary.html?storyid=10693 for the full table.

The Remote Code Exploit is possible without authentication, so this presents a serious risk to internal networks.  Think Downadup/Conficker, or think lateral movement if that will help motivate patching.

Also note that this patch requires a reboot of your system.

Please submit any reports of weponization/exploits, or impacts from applying the patch.

Sorry.

-KL