Whilst testing SSL of a MariaDB server version 10.4.8 running Linux from a Windows 10 machine I noted that connection using MySQL client (mysql-8.0.18-winx64) connects successfully, however connections with MariaDB client (mariadb-10.4.8-winx64) fails.

In case of MariaDB I have downloaded the file (https://downloads.mariadb.org/interstitial/mariadb-10.4.8/winx64-packages/mariadb-10.4.8-winx64.zip/from/https%3A//mirror.serverion.com/mariadb), whilst for MySQL client I used (https://dev.mysql.com/downloads/file/?id=490026).

C:\temp\mariadb-10.4.8-winx64>mysql --user=penzk001 --password --host=<hostname> --port=3306 --tls-version=TLSv1.2 --ssl-ca=c:\temp\CACert.pem

C:\temp\mysql-8.0.18-winx64\bin>  mysql --user=penzk001 --password --host=<hostname> --port=3306 --tls-version=TLSv1.2 --ssl-ca=c:\temp\CACert.pem 

Welcome to the MySQL monitor.  Commands end with ; or \g.

...

mysql>\s

...

SSL:                    Cipher in use is DHE-RSA-AES128-GCM-SHA256

...

mysql>