Per http://www.openbsd.org, “Only two remote holes in the default install, in a heck of a long time!” I believe, at least one of these, was SSH related.
Yeah, people in the 90s really loved installing redhat 4 (not rhel 4, the old versions) and getting a vulnerable pop2/pop3/imapd running by default after installs. You would get hacked within the hour if not behind firewalls.
Very unfair of OpenBSD (and other security conscious OSes) to not compete on equal terms there.