Update Logitech Unifying firmware for MouseJack & KeyJack

The MouseJack and KeyJack eavesdropping / injection attack for numerous devices will no doubt persist for a long time. These vulnerabilities allow your unencrypted wireless mouse connection to be used as a keyboard by attackers to inject unwanted keystrokes, possibly taking over your PC. Force pairing allows unauthorized input to your PC.

Firmware seriesMouseJack/KeyJack patched


Since May 2017, the Linux “fwupd” utility has supported updating Logitech Unifying receivers. Ubuntu 18.04 and Fedora among others will give you a prompt to update your receiver firmware, which is a seamless quick process.

Check firmware version and pair devices to the Logitech Unifying receiver with

apt install solaar

Update thanks to Richard Hughes, a senior developer at Red Hat.

Check firmware version

List all recognized devices, including firmware versions where applicable:

fwupdmgr get-devices


  1. Download/extract Unifying Receiver firmware
  2. Install Unifying Receiver software
  3. In Logitech Unifying software click Advanced → Update Firmware