freeradius has a problem with md5 hash value

Issue

The md5 hash value doesn't match with what I have created with md5sum command.

It's created as below.

# echo "XYZ12345" | md5sum | cut -f1 -d' '
5648e6786fb1f197fa1f147f0f9f8caf

The following tester user is configured in /etc/raddb/users.

tester           MD5-Password := "5648e6786fb1f197fa1f147f0f9f8caf"
                 Service-Type = "Authenticate-Only",
                 Login-LAT-Group = "config"

Test with radtest, and the authentication was rejected with a message "rad_recv: Access-Reject packet from host ....".