The remote host may give an attacker information useful for future attacks.
The remote Tectia SSH server is vulnerable to a flaw within its Cipher-Block Chaining (CBC) mode. An attacker exploiting this flaw would be able to obtain four (4) plaintext bytes of the encrypted session. Note: successful attack will result in the SSH session terminating.
Upgrade to version 4.4.12, 5.2.5, 5.3.9, 6.0.5 or higher.