Microsoft Excel 2000 2002 2003 Viewer 2003 Office 2004 for Mac and Office v.X for Mac does not properly handle certain opcodes which allows user-assisted remote attackers to execute arbitrary code via a crafted XLS file which results in an \Improper Memory Access Vulnerability.\ NOTE: an early disclosure of this issue used CVE-2006-3432 but only CVE-2007-0028 should be used.