Microsoft Office Outlook 2002 SP3, 2003 SP3, and 2007 SP1 and SP2 does not properly verify e-mail attachments with a PR_ATTACH_METHOD property value of ATTACH_BY_REFERENCE, which allows user-assisted remote attackers to execute arbitrary code via a crafted message, aka "Microsoft Outlook SMB Attachment Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11623
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-045