CVE-2025-14234
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 · uneditedBuffer overflow in CPCA list processing on 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 LBP670C Series/Satera MF750C Series firmware v06.02 and earlier sold in Japan.Color imageCLASS LBP630C/Color imageCLASS MF650C Series/imageCLASS LBP230 Series/imageCLASS X LBP1238 II/imageCLASS MF450 Series/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II firmware v06.02 and earlier sold in US.i-SENSYS LBP630C Series/i-SENSYS MF650C Series/i-SENSYS LBP230 Series/1238P II/1238Pr II/i-SENSYS MF450 Series/i-SENSYS MF550 Series/1238i II/1238iF II/imageRUNNER 1643i II/imageRUNNER 1643iF II firmware v06.02 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 confidenceBuffer overflow vulnerability in Canon Printer Communication Architecture (CPCA) list processing allows remote attackers on the same network segment to cause denial of service or execute arbitrary code on affected Canon Satera, Color imageCLASS, i-SENSYS, and imageRUNNER printer firmware versions v06.02 and earlier.
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<= 06.02<= 06.02<= 06.02<= 06.02<= 06.02<= 06.02<= 06.02<= 06.02CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify printer modelAccess the printer's web interface (if available) or print a configuration/status page from the control panel to determine the exact model number (e.g., MF455dw, MF652cw)Affected if The model is one of: MF455dw, MF453dw, MF452dw, MF451dw, MF654cdw, MF656cdw, MF653cdw, or MF652cw
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Check installed firmware versionFrom the printer's web interface (under Device Information or Maintenance) or from the printed configuration page, locate the firmware version fieldAffected if The firmware version is v06.02 or earlier (e.g., v06.01, v05.xx, etc.)
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Verify CPCA network exposureScan the printer's IP address on common CPCA ports (typically 8080, 8000, or the printer's HTTP port) using a network scanner or by checking open ports with 'nmap <printer-ip>' or equivalent toolAffected if CPCA service is listening on the network and accessible from non-trusted network segments
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Assess network accessibilityConfirm whether the printer is on a shared network segment or VLAN that includes untrusted systems; check firewall rules or access control lists that may restrict printer port accessAffected if The printer and its CPCA service are reachable by systems outside a trusted administrative network
You are affected if your Canon printer model matches one of the eight listed models AND its firmware version is 06.02 or earlier AND the CPCA service is network-accessible.
Generated from the published advisory. Verify against your own configuration.
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.
dbcve · scopedUpdate Canon printer firmware to a version newer than v06.02; apply network segmentation and access controls as compensating controls until firmware updates can be deployed.
Firmware version > 06.02 (latest available from Canon)
- 1. Identify the exact model number of your Canon printer from the affected list (Mf455dw, Mf453dw, Mf452dw, Mf451dw, Mf654cdw, Mf656cdw, Mf653cdw, Mf652cw or the regional equivalents).
- 2. Visit the official Canon support website for your region (canon.jp, canon-europe.com, usa.canon.com, or your local Canon site).
- 3. Navigate to the support/drivers section and search for your specific printer model.
- 4. Look for firmware updates - Canon typically releases firmware updates addressing security vulnerabilities.
- 5. Download the firmware update file following Canon's provided instructions.
- 6. Update the printer firmware to the latest version available, which should contain the security patch for CVE-2025-14234.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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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 sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-14234 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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