Panasonic Security System WV-S2231L 4.25 allows a denial of service of the admin control panel (which will require a physical reset to restore administrative control) via Randomnum=99AC8CEC6E845B28&mode=1 in a POST request to the cgi-bin/set_factory URI.

Panasonic Security System WV-S2231L 4.25 has an insecure hard-coded password of lkjhgfdsa (which is just the asdf keyboard row in reverse order).