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