Microsoft Office Visio 2002 SP2, 2003 SP3, and 2007 SP1 does not properly validate object data in Visio files, which allows remote attackers to execute arbitrary code via a crafted file, aka "Memory Validation Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6179
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-005