The remote mail server is affected by an authentication bypass
vulnerability.
Description :
The remote host is running Dovecot, an open-source IMAP4 / POP3 server
for Linux / Unix.
The version of Dovecot installed on the remote host uses a TAB
character as a delimiter internally but fails to escape them when they
appear in a password. Provided Dovecot is configured to use a
blocking passdb, an attacker can leverage this issue to bypass
authentication and gain access to a users mailbox.
