MS12-020 in particular is an important security patch to ensure the Remote Desktop Protocol (RDP) is protected as exploits are being developed in the wild. All corporate and home users should get all PCs and servers updated expediently to ensure protection.
Microsoft Security Updates – March 2012
MS12-020 – Critical to Patch due to Exploit development in the wild
Vulnerabilities in Remote Desktop Could Allow Remote Code Execution (2671387)
The ISC provides an excellent analysis and rates this update as “Patch Now“:
Microsoft Security Updates – March 2012 (Patch Now)