Fairphone will release the monthly security update for the Fairphone 2 today.
This includes a patch for the Blueborne vulnerability.
Blueborne is a very serious vulnerability affecting potentially over 5 billion Bluetooth enabled devices. Android devices as the Fairphone 2 are also affected and need to be patched to secured against this bug.
More information can be found at the link above and at various (tech) newssites.