Advisory Details

March 16th, 2026

(Pwn2Own) Canon imageCLASS MF654Cdw TTF Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-26-206
ZDI-CAN-28349

CVE ID CVE-2025-14235
CVSS SCORE 8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Canon
AFFECTED PRODUCTS imageCLASS MF654Cdw
VULNERABILITY DETAILS

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 specific flaw exists within parsing of TrueType fonts. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the device.
ADDITIONAL DETAILS Canon has issued an update to correct this vulnerability. More details can be found at:
https://www.canon-europe.com/support/product-security/
DISCLOSURE TIMELINE
  • 2025-11-11 - Vulnerability reported to vendor
  • 2026-03-16 - Coordinated public release of advisory
  • 2026-03-16 - Advisory Updated
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