The Four-Faith F3x36 router using firmware v2.0.0 is vulnerable to authentication bypass due to hard-coded credentials in the administrative web server. An attacker with knowledge of the credentials can gain administrative access via crafted HTTP requests. This issue appears similar to CVE-2023-32645.
https://vulncheck.com/advisories/four-faith-hard-coded-creds
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1752