Thank you for your continued trust in Canon products. We have identified potential multiple buffer overflow vulnerabilities in the Canon Laser Printers and Small Office Multifunctional Printers here: Affected Models.

If the product connects directly to the Internet without using a wired or Wi-Fi router, a third party could potentially execute arbitrary code, or subject the product to a Denial-of-Service (DoS) attack.

Below are the CVE numbers associated with the potential Buffer Overflow issue:

Mitigation/Remediation:

1. It is recommended for customers to set a private IP address for the products and create a network environment with a firewall or wired/Wi-Fi router that restricts network access. Visit here to find out how to secure products while connecting to a network.
2. Customers are advised to install the latest firmware available at our support site.

First Posted on 19 Feb 2026