"Microsoft Excel is prone to a remote code-execution vulnerability.
Attackers can exploit this issue by enticing victims into opening a
specially crafted Excel ('.xls') file.
Successful exploits can allow attackers to execute arbitrary code with
the privileges of the user running the application. "
Versions of Excel from 2002 to 2008 are affected on both Windows and
Macintosh platforms. Please make sure your Microsoft Office products
are updated to the latest releases.