Stack-based buffer overflow in nsum.exe in the Windows Media Unicast Service in Media Services for Microsoft Windows 2000 Server SP4 allows remote attackers to execute arbitrary code via crafted packets associated with transport information, aka "Media Services Stack-based Buffer Overflow Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7001
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-025