The remote host is vulnerable to a Denial of Service (DoS) attack.
The remote host is running Rhinosoft DNS4Me, a dynamic DNS software for Windows systems. DNS4Me includes a small web server that can serve static content. It is reported that this embedded web server is prone to multiple security flaws including remote denial of service and cross-site scripting. An attacker can crash the server by sending an abnormally long request or steal cookie-based authentication credentials by sending a malformed link to this site.
Upgrade or patch according to vendor recommendations.