InfoSecBulletin Cybersecurity for mankind
A passback vulnerability has been found in some Canon printers, including production and multifunction models. If an attacker gains administrative access, they could obtain sensitive authentication information, including SMTP and LDAP connections.
Affected Products:
Daily Cyber security update for 24. 10. 2026
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imageRUNNER ADVANCE Series
imageRUNNER Series
imagePRESS V Series
imagePRESS Series
imageCLASS Series
i-sensys Series
Satera Series
Mitigation/Remediation:
To ensure the security of our customers’ print infrastructure, Canon recommends following these guidelines:
- Avoid connecting products directly to public internet networks. Instead, when connecting to the internet, use a private IP address in an environment where the internet can be accessed from a secure private network, built with firewall products, wired routers or Wi-Fi routers.
- Change the product’s default password to a new password.
- Set up administrator and general user IDs and passwords.
- Ensure that passwords and other similar settings for various functions are sufficiently difficult to guess.
- If the product has single or multi-factor authentication functions, use them to confirm the identity of the end-user who is using the product.
- Be aware of physical security needs, including those related to the location of the product etc.
Canon advises to see here for more information on securing products when For enhanced security, some products have special features. More details are available on local Canon websites.
