The WifiEnterpriseConfig class in net/wifi/WifiEnterpriseConfig.java in Wi-Fi in Android 4.x before 4.4.4 5.0.x before 5.0.2 5.1.x before 5.1.1 and 6.x before 2016-09-01 includes a password in the return value of a toString method call which allows attackers to obtain sensitive information via a crafted application aka internal bug 25624963.