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Satera Mf656cdw FirmwareOperating system · Canon

CVE-2025-2146

CRITICAL · 9.8 CVSS v3.1 Published 2025-05-26
Fix available
A fix is available. Upgrade to after 05.07 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Buffer overflow in WebService Authentication processing of Small Office Multifunction Printers and Laser Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera MF656Cdw/Satera MF654Cdw/Satera MF551dw/Satera MF457dw firmware v05.07 and earlier sold in Japan. Color imageCLASS MF656Cdw/Color imageCLASS MF654Cdw/Color imageCLASS MF653Cdw/Color imageCLASS MF652Cdw/Color imageCLASS LBP633Cdw/Color imageCLASS LBP632Cdw/imageCLASS MF455dw/imageCLASS MF453dw/imageCLASS MF452dw/imageCLASS MF451dw/imageCLASS LBP237dw/imageCLASS LBP236dw/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II/imageCLASS X LBP1238 II firmware v05.07 and earlier sold in US. i-SENSYS MF657Cdw/i-SENSYS MF655Cdw/i-SENSYS MF651Cdw/i-SENSYS LBP633Cdw/i-SENSYS LBP631Cdw/i-SENSYS MF553dw/i-SENSYS MF552dw/i-SENSYS MF455dw/i-SENSYS MF453dw/i-SENSYS LBP236dw/i-SENSYS LBP233dw/imageRUNNER 1643iF II/imageRUNNER 1643i II/i-SENSYS X 1238iF II/i-SENSYS X 1238i II/i-SENSYS X 1238P II/i-SENSYS X 1238Pr II firmware v05.07 and earlier sold in Europe.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Buffer overflow vulnerability in the WebService Authentication processing component of Canon small office multifunction printers and laser printers. The flaw allows a network-adjacent attacker to potentially crash the device (DoS) or achieve arbitrary code execution due to improper bounds checking during authentication processing. The vulnerability affects firmware versions v05.07 and earlier across multiple product lines sold in Japan, US, and Europe.

MitigationApply Canon firmware updates (version v05.08 or later) to all affected devices. If immediate patching is not possible, restrict network access to trusted segments and disable unused WebServices features to reduce attack surface.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Satera Mf656cdw FirmwareOperating system
Affected:<= 05.07
Satera Mf654cdw FirmwareOperating system
Affected:<= 05.07
Satera Mf551dw FirmwareOperating system
Affected:<= 05.07
Satera Mf457dw FirmwareOperating system
Affected:<= 05.07
Imageclass Mf656cdw FirmwareOperating system
Affected:<= 05.07
Imageclass Mf654cdw FirmwareOperating system
Affected:<= 05.07
Imageclass Mf653cdw FirmwareOperating system
Affected:<= 05.07
Imageclass Mf652cdw FirmwareOperating system
Affected:<= 05.07

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify your Canon printer model
    Locate the model label on the front or inside the device, or check the device's web interface or control panel for the exact model name (e.g., Satera Mf656cdw, Imageclass Mf654cdw).
    Affected if The model is one of: Canon Satera Mf656cdw, Mf654cdw, Mf551dw, Mf457dw, or Canon Imageclass Mf656cdw, Mf654cdw, Mf653cdw, Mf652cdw.
  2. Check installed firmware version
    Access the printer's web interface (embedded web server) via IP address, navigate to the Settings or Device Information section, and locate the firmware version field. Alternatively, print a configuration page from the control panel to view firmware version.
    Affected if The firmware version is v05.07 or any version lower than v05.07 (e.g., v05.06, v05.05).
  3. Verify WebService feature status
    Access the printer's web interface and navigate to the Network Settings or WebServices configuration section. Check if WebServices (including WebDAV or remote scan features) is enabled.
    Affected if WebService or WebDAV functionality is enabled and accessible over the network.

You are affected if your Canon printer model is in the Satera or Imageclass series listed AND the firmware version is v05.07 or earlier AND WebService authentication is accessible on the network.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to a release after 05.07
Interim mitigation

Apply Canon firmware updates (version v05.08 or later) to all affected devices. If immediate patching is not possible, restrict network access to trusted segments and disable unused WebServices features to reduce attack surface.

Fix this in Satera Mf656cdw Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-2146 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data