Microsoft Warns Customers About New Zero-Day Word Exploit

Microsoft Corp. today issued a security advisory telling customers it is "investigating" reports of new zero-day code aimed at Microsoft Word 2000.

"In order for this attack to be carried out, a user must first open a malicious Word file attached to an e-mail or otherwise provided to them by an attacker," the company said.

Security vendor Symantec said it began detecting code for this exploit, a variant of a previous Trojan, earlier this week.

Microsoft said that it may release an "out-of-cycle" patch for the flaw, depending on the results of the investigation. It has updated Windows Live OneCare to detect such code, as well as alerted other vendors.

To read the advisory, go here.

About the Author

Becky Nagel is the executive editor of the 1105 Redmond Media Group's Web sites, including,, and, among others.