# CVE-2025-2146: Memory corruption in Color imageCLASS LBP632Cdw

> A buffer overflow in Canon printer firmware allows network attackers to execute arbitrary code or cause denial of service.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 May 2025
- **Updated:** 27 May 2025
- **Also known as:** GHSA-xcjx-g6h3-96jc

## What is CVE-2025-2146?

CVE-2025-2146 is a critical memory corruption vulnerability in Canon Inc. Color imageCLASS LBP632Cdw, published on 25 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2025-2146?

It affects 37 products.


Products: Canon I-Sensys Lbp233dw Firmware, Canon I-Sensys Lbp236dw Firmware, Canon I-Sensys Lbp631cdw Firmware, Canon I-Sensys Lbp633cdw Firmware, Canon I-Sensys Mf453dw Firmware, Canon I-Sensys Mf455dw Firmware, Canon I-Sensys Mf552dw Firmware, Canon I-Sensys Mf553dw Firmware, Canon I-Sensys Mf651cdw Firmware, Canon I-Sensys Mf655cdw Firmware, Canon I-Sensys Mf657cdw Firmware, Canon I-Sensys X 1238i Ii Firmware, Canon I-Sensys X 1238if Ii Firmware, Canon I-Sensys X 1238p Ii Firmware, Canon I-Sensys X 1238pr Ii Firmware, Canon Imageclass Lbp236dw Firmware, Canon Imageclass Lbp237dw Firmware, Canon Imageclass Lbp632cdw Firmware, Canon Imageclass Lbp633cdw Firmware, Canon Imageclass Mf451dw Firmware and 17 more.

## How do I fix CVE-2025-2146?

No fix has been published for CVE-2025-2146 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-2146 being exploited?

There is no known exploitation of CVE-2025-2146 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-2146 and fix it if it is affected.

What it is: CVE-2025-2146 is a critical memory corruption vulnerability in Canon Inc. Color imageCLASS LBP632Cdw, published on 25 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-2146 in the wild and no public exploit code.

Affected product: Canon Inc. Color imageCLASS LBP632Cdw. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-2146/ (Markdown: https://insights.sbomify.com/CVE-2025-2146/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-2146
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-2146
- OSV: https://osv.dev/vulnerability/CVE-2025-2146

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-2146/
Summaries are generated and may contain mistakes; the official description above is the record.