Canon U.S.A., Inc. has recently become aware of a buffer overflow vulnerability in the Canon Laser Printers and Small Office Multifunctional Printers listed under Affected models below. 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. (CVE-2022-43608)

Affected models:

imageCLASS MF Series
MF1127C
MF641CW/MF642CDW/MF644CDW
MF741CDW/MF743CDW/MF745CDW/MF746CDW

imageCLASS LBP Series
LBP1127C
LBP622CDW/LBP623CDW
LBP664CDW

Note: If we determine that additional products could potentially be impacted by this matter, we will issue an updated Service Notice.

Firmware download:
Please proceed to https://www.usa.canon.com/support or click on the Affected model link above to navigate to the latest firmware. Once here, change the Type filter to Firmware and download and install the latest version.

Furthermore, if you have not done so already, we recommend that you set up a private IP address for products and create a network environment with a firewall or Wi-Fi router that can restrict network access.

In addition, please check “Regarding security for products connected to a network” in the URL below for other security measures that can be used with your Canon products.

https://global.canon/en/support/security/prd-secu.html

Thank you,
Customer Support
Canon U.S.A., Inc.

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