Heap overflow

Heap-based buffer overflow in Microsoft Office Excel 2007 SP1 and SP2 and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a crafted spreadsheet in which “a MDXSET record is broken up into several records,” aka “Microsoft Office Excel MDXSET Record Heap Overflow Vulnerability.”