Canon i-Sensys printers suffer from serious security vulnerabilities

According to Tom’s Hardware, all firmware versions up to 3.07 for the affected printers are considered vulnerable. The impacted models include Canon i-Sensys MF750 and LBP670 Color Laser printers, as well as some from the i-Sensys X series (X C1333i, C1333iF, X C1333P).

The i-Sensys MF750 is one of the models recently found to have a severe security flaw.

Seven security vulnerabilities have been identified in these Canon printers. Notably, some of these vulnerabilities allow remote execution of arbitrary code, potentially causing device malfunctions and enabling denial-of-service (DoS) attacks. According to the Common Vulnerability Scoring System (CVSS), most of these vulnerabilities are rated as “critical,” receiving a severity score of 9.8 out of 10.

Until security updates are installed to address these issues, owners of affected printers are advised not to connect them to the internet. The Japanese manufacturer has begun releasing new firmware for the impacted printers to mitigate the vulnerabilities. For example, updates are available for devices like the MF754Cdw and MF752Cdw. Users are encouraged to install the new firmware using the recently introduced Firmware Update Tool V03.09 from the company’s website