Buffer overflow in the Still Image Service in Windows 2000 allows local users to gain additional privileges via a long WM_USER message, aka the "Still Image Service Privilege Escalation" vulnerability.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5203
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-065
http://www.atstake.com/research/advisories/2000/a090700-1.txt