WordPad in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly parse fields in Word documents, which allows remote attackers to execute arbitrary code via a crafted .doc file, aka "WordPad Converter Parsing Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12301
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-033