Microsoft SQL Server 7, 2000, and MSDE allows local users to execute arbitrary code via a certain request to the Local Procedure Calls (LPC) port that leads to a buffer overflow.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A303
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-031
http://www.kb.cert.org/vuls/id/584868
http://www.atstake.com/research/advisories/2003/a072303-3.txt