Gregg Keizer at TechWeb via Yahoo:
Symantec raised its overall Internet alert Friday on the news that a zero-day vulnerability in Microsoft Word was being exploited by hackers hoping to hijack PCs.
“Currently, observed attacks are limited to attacks against select targets,” Symantec warned in a bulletin to customers of its DeepSight Threat Management System.
The attack is successful against the newest version of Microsoft’s word processor, Word 2003, but only crashes Word 2000 and Word XP, without leading to a computer compromise.
More details on the specific exploit by following the link, but the net is that any Word 2003 document you receive from external sources should be viewed with suspicion until Microsoft provides a fix.