Revision Note: V2.1 (March 5, 2009): Removed Open XML File Format Converter for Mac from the affected software listed in the Overview section. The Open XML File Format Converter for Mac is not affected by the vulnerability described in this advisory. Advisory Summary:Microsoft is investigating new public reports of a vulnerability in Microsoft Office Excel that could allow remote code execution if a user opens a specially crafted Excel file. At this time, we are aware only of limited and targeted attacks that attempt to use this vulnerability.
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