There has been some news regarding a new word vulnerability. There is not much information available. Basically you have to open an infected document for the attack to become successful.

Targets are:
Word 2000
Word 2002
Word 2003
Word Viewer 2003
Word 2004 for Mac
Word 2004 v. X for Mac
Works 2004, 2005, and 2006

On Microsoft's site we see:

"Upon completion of this investigation, Microsoft will take the appropriate action to help protect our customers. This may include providing a security update through our monthly release process or providing an out-of-cycle security update, depending on customer needs."

We are investigating this issue, and will forward more information when it becomes available.