Array index vulnerability in Microsoft Office Excel 2000 SP3 and 2002 SP3, and Office 2004 and 2008 for Mac allows remote attackers to execute arbitrary code via an Excel file with a crafted array index for a FORMAT record, aka the "Excel Index Array Vulnerability."
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.