The host is installed with Putty before 0.75 and is prone to a denial of service vulnerability. A flaw is present in the application, which fails to properly handle the execution of a simple command to repeatedly change the terminals title. Successful exploitation could allow attackers to make the remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls.