Microsoft Security Advisory MS10-087:
Microsoft Office contains programming errors that may allow a remote attacker to execute code on an affected system.
Microsoft Security Advisory MS10-088:
Microsoft Office PowerPoint contains programming errors that may allow a remote attacker to execute code on an affected system.
Microsoft Security Advisory MS10-089:
Microsoft ForeFront United Gateway contains programming errors that may allow a remote attacker to execute code on an affected system.
Check out the advisory and change logs here: http://www.snort.org/vrt/advisories/2010/11/09/vrt-rules-2010-11-09.html