AnyDesk before 5.5.3 on Linux and FreeBSD has a format string vulnerability that can be exploited for remote code execution.
https://download.anydesk.com/changelog.txt
https://devel0pment.de/?p=1881
http://packetstormsecurity.com/files/161628/AnyDesk-5.5.2-Remote-Code-Execution.html
http://packetstormsecurity.com/files/158291/AnyDesk-GUI-Format-String-Write.html