NetBSD team announced second security/bugfix update of NetBSD 7.1 branch on 15 of March, 2018 .  As usual you can download 7.1.2 version by choosing one of the NetBSD mirrors or torrent files. File hashes can be verified at this location. Release announcement and full list of changes can be found here and here respectively. It is strongly recommended to update your system in case you are running earlier version currently.