Microsoft Security Advisory (947563)
Vulnerability in Microsoft Excel Could Allow Remote Code Execution
Published: January 15, 2008 | Updated: January 16, 2008
Microsoft is investigating new public reports of a vulnerability in Microsoft Office Excel 2003 Service Pack 2, Microsoft Office Excel Viewer 2003, Microsoft Office Excel 2002, Microsoft Office Excel 2000, and Microsoft Excel 2004 for Mac. At this time, Microsoft's initial investigation indicates that customers who are using Microsoft Office Excel 2007 or Microsoft Excel 2008 for Mac, or who have installed Microsoft Office Excel 2003 Service Pack 3 are not affected by this vulnerability.
See advisory at: TechNet
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