For WordPress, visit https://target.com/wp-admin/install.php . If it redirects or shows an error, the panel is likely live. If you see the WordPress installer, the site is critically misconfigured.
You can access your control panel through a URL like this most of the time: https://www.google.com/search?q=yourdomain.com:2083. CloudPanel Tool To Find Admin Login Pages And EAR Vulnerabilities how to find admin panel of a website
Websites often inadvertently list sensitive directories in files meant for search engines: robots.txt: example.com/robots.txt For WordPress, visit https://target