Microsoft SharePoint Server 2013, in certain configurations involving legacy My Sites, does not properly establish default access controls for a SharePoint list, which allows remote authenticated users to bypass intended restrictions on reading list items via a direct request for a list's location, aka "Incorrect Access Rights Information Disclosure Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15758
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-030