ZDI-26-203: (Pwn2Own) Canon imageCLASS MF654Cdw XML SOAP Request Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

Published Mar 16, 2026

Updated

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF654Cdw printers. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2025-14231.

Affected Software

1 affected component

Canon imageCLASS MF654Cdw

Event History

Mar 16, 2026

Advisory Published

via ZDI·05:00 AM

Data Sourced

via ZDI·05:00 AM

Description

Frequently Asked Questions

What is the severity of ZDI-26-203?

The severity of ZDI-26-203 is critical, as it allows remote code execution on affected Canon printers.

How do I fix ZDI-26-203?

To fix ZDI-26-203, update the firmware of the Canon imageCLASS MF654Cdw printer to the latest version provided by Canon.

Who is affected by ZDI-26-203?

ZDI-26-203 affects installations of the Canon imageCLASS MF654Cdw printer that are accessible over the network.

What type of attack does ZDI-26-203 allow?

ZDI-26-203 allows network-adjacent attackers to execute arbitrary code on the affected printers.

Is authentication required for ZDI-26-203 exploitation?

No, authentication is not required to exploit ZDI-26-203, making it particularly dangerous.

Company

Resources

Contact

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