Microsoft Office PowerPoint 2002 SP3 and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to execute arbitrary code via a malformed structure value in a PowerPoint file that triggers memory corruption, aka "Heap Corruption Vulnerability."

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-1130)