Synopsis
The remote mail server is vulnerable to a Remote Command Execution (RCE) attack vector.
Description
The remote host is running Exim, a message transfer agent.
Versions of Exim earlier than 4.92.2 are affected by a vulnerability that is exploitable by sending a SNI ending in a backslash-null sequence during the initial TLS handshake.
Solution
Upgrade to Exim 4.92.2 or later.