server/pm/UserManagerService.java in Wi-Fi in Android 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-05-01 allows attackers to bypass intended restrictions on Wi-Fi configuration changes by leveraging guest access, aka internal bug 27411179.
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.