ZDI-25-309: (Pwn2Own) Canon imageCLASS MF656Cdw sfpcmAuthenticateSecAdmin Stack-based Buffer Overflow Remote Code Execution Vulnerability
Published May 28, 2025
·Updated
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF656Cdw 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-2025-2146.
Affected Software
1 affected component
Canon imageCLASS MF656Cdw
Event History
May 28, 2025
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What is the severity of ZDI-25-309?
The severity of ZDI-25-309 is rated 8.8 on the CVSS scale.
2
How do I fix ZDI-25-309?
To fix ZDI-25-309, update the firmware of the Canon imageCLASS MF656Cdw printer to the latest version.
3
Who is impacted by ZDI-25-309?
The ZDI-25-309 vulnerability impacts installations of Canon imageCLASS MF656Cdw printers.
4
Can ZDI-25-309 be exploited remotely?
Yes, ZDI-25-309 can be exploited by network-adjacent attackers without requiring authentication.
5
What type of attack does ZDI-25-309 allow?
ZDI-25-309 allows attackers to execute arbitrary code on the affected installations.