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.
https://security.panasonic.com/products_technology/products/wv-s2231l/
https://github.com/cecada/Panasonic-WV-S2231L/blob/main/README.md