Unspecified vulnerability in mso.dll in Microsoft Office 2000, XP, and 2003, and Microsoft PowerPoint 2000, XP, and 2003, allows remote user-assisted attackers to execute arbitrary code via a malformed record in a (1) .DOC, (2) .PPT, or (3) .XLS file that triggers memory corruption, related to an "array boundary condition" (possibly an array index overflow), a different vulnerability than CVE-2006-3434, CVE-2006-3650, and CVE-2006-3868.