CVE-2021-43517
FOSCAM Camera FI9805E with firmware V4.02.R12.00018510.10012.143900.00000 contains a backdoor that opens Telnet port when special command is sent on port 9530.
MISC: https://habr.com/ru/post/486856/
CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43517
published: 8. 4. 2022