Microsoft Office 2003 SP1 and SP2, Office XP SP3, Office 2000 SP3, Office 2004 for Mac, and Office X for Mac do not properly parse record lengths, which allows remote attackers to execute arbitrary code via a malformed control in an Office document, aka "Microsoft Office Control Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-038