Buffer overflow in Microsoft Word in Office 2000 SP3, Office XP SP3, Office 2003 Sp1 and SP2, and Microsoft Works Suites through 2006, allows user-assisted attackers to execute arbitrary code via a malformed object pointer, as originally reported by ISC on 20060519 for a zero-day attack.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26556
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-027