Advisory Details

March 16th, 2026

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

CVE ID	CVE-2025-14231
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 the parsing of SOAP requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. 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
CREDIT	Nguyễn Hoàng Thạch, Gerrard Tai, Cherie-Anne Lee, Tan Ze Jian, Lin Ze Wei of STAR Labs SG Pte. Ltd.

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