Keep an eye out for any Word attachments you get until patch Tuesday, unless Microsoft releases an interim update.  MS Word 2000 and up, including Mac versions and even more recent Works versions all suffer from a vulnerability, according to this article on CNET.
“The vulnerability is similar to previous so-called zero-day flaws that have hit Office applications in recent months. An attacker could rig a Word file in such a way that he would gain complete control over a vulnerable PC when the file is opened, Microsoft said in its advisory.

An attacker could exploit the flaw by hosting a Web site with a malicious Word file or send an e-mail with the file as an attachment. In all cases, the target would have to open the file to be compromised, Microsoft said. ”

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