Unauthorized Access Vulnerability in Syska SW100 Smartwatch

The vulnerability exists in Syska SW100 Smartwatch due to an improper implementation and/or configuration of Nordic Device Firmware Update (DFU) which is used for performing Over-The-Air (OTA) firmware updates on the Bluetooth Low Energy (BLE) devices. An unauthenticated attacker could exploit this vulnerability by setting arbitrary values to handle on the vulnerable device over Bluetooth. Successful exploitation of this vulnerability could allow the attacker to perform firmware update, device reboot or data manipulation on the target device.