Canon Warns of Security Risks in Inkjet Printers: A Comprehensive Look at the Issue

Canon, the renowned printer manufacturer, has recently issued a security advisory regarding potential risks linked to certain inkjet printer models. The flaw, which is related to the disposal of these printers, could lead to serious breaches of user privacy and data security. This article combines information from three separate news reports to offer an in-depth analysis of the situation.

The Security Flaw

The security vulnerability discovered by Canon pertains to sensitive Wi-Fi connection settings, which are not adequately erased during the standard initialization process of specific inkjet printer models. Information such as the network SSID, password, network type (WPA3, WEP, etc.), assigned IP address, MAC address, and network profile could be compromised.

  • Impact: If exploited, unauthorized access to critical Wi-Fi setup information could lead to a breach of user privacy and data security.
  • Affected Printers: The problem affects a broad spectrum, encompassing 196 inkjet, business inkjet, and large-format inkjet printer models across various series such as E, G, GX, iB, iP, MB, MG, MX, PRO, TR, TS, and XK.
  • Concern: The information stored in a Canon printer varies based on the model and setup, but it typically encompasses crucial networking details.

Third-Party Risks

The vulnerability becomes a potential threat especially when the printer is in the hands of third parties, such as during repairs, lending, or disposal. Mike Parkin, senior technical engineer at Vulcan Cyber, emphasized the risk, stating, “There is always some risk when a third party is working on hardware, or hardware is sold or repurposed, that some sensitive data may be recovered from the device.”

Canon’s Response and Recommendations

Canon has taken immediate steps to address the issue by identifying the affected inkjet printer models and urging users to take the following action:

  • Factory reset the models twice (the second time after having enabled wireless LAN) to ensure the complete deletion of sensitive data.
  • If the instructions do not apply to a specific printer model, Canon suggests consulting the operation manual that accompanied the device.
  • Install any available firmware updates and deactivate unnecessary services like cloud printing or remote management interfaces.
  • Isolate printers on separate networks from valuable assets to ensure that even if the network is compromised, attackers won’t be able to access critical devices.
  • For Canon printers without a dedicated reset function, users should follow specific steps provided in the official advisory.


This security concern from Canon sheds light on the importance of data protection in devices often deemed innocuous. The extensive list of affected models and the steps necessary to address the issue signifies the urgency with which users should act. Following Canon’s guidelines will mitigate the risks and safeguard sensitive information, reinforcing the trust that customers place in their products. It’s an important reminder for both individuals and organizations to remain vigilant about the security of their devices, not just computers and smartphones but peripherals such as printers as well.

The Canon incident underscores the intricate nature of digital security in an interconnected world, where even seemingly minor oversights in the disposal or handling of office equipment can lead to significant vulnerabilities

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