The remote SSH server is susceptible to denial of service attacks.
The remote host is running Dropbear, a small, open-source SSH server. The version of Dropbear installed on the remote host by default has a limit of 30 connections in the authorization-pending state; subsequent connections are closed immediately. This issue can be exploited trivially by an unauthenticated attacker to deny service to legitimate users.
Upgrade to version 0.48 or higher.