Greetings,
If you printer is behind a firewall, the vulnerabilities cannot be exploited. It would have to be connected to a directly to the internet.
"If the product is connected directly to the internet without using a wired or Wi-Fi router, a third party could potentially execute arbitrary code or the product could be subjected to a Denial-of-Service (DoS) attack."
I searched and did not see any firmware downloads for your device either. You'll have to reach out to support directly for further assistance.
Printers - imageCLASS (MF, LBP & D Series)
1-800-652-2666 Monday-Friday:
8:00 am to 9:00 pm
~Rick
Bay Area - CA
~R5 C (1.0.5.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10
~DxO PhotoLab Elite ~DaVinci Resolve ~Windows11 Pro ~ImageClass MF644Cdw ~Pixel 8
~CarePaks Are Worth It
