Is there a specific folder in WordPress that commonly triggers 403 errors due to incorrect permissions?

While any folder can trigger a 403 error with incorrect permissions, issues are particularly common with the `wp-admin` directory itself, the `wp-includes` directory, or sometimes the root WordPress directory. Ensuring that these directories, along with `wp-content`, are set to 755 (and their contained files to 644) is crucial. Incorrect permissions on the index.php file in the root can also cause a 403 error when trying to access the site or admin.