A remote code execution vulnerability exists in Remote Desktop Services - formerly known as Terminal Services - when an authenticated attacker abuses clipboard redirection, aka 'Remote Desktop Services Remote Code Execution Vulnerability'.
https://research.checkpoint.com/reverse-rdp-the-hyper-v-connection/
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0887