Memory leak in Terminal servers in Windows NT and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed Remote Desktop Protocol (RDP) requests to port 3389.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6912
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-040