# CVE-2023-6229: Memory corruption in C1333P

> 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:** 6 Feb 2024
- **Updated:** 17 Jun 2025
- **Also known as:** GHSA-mmfm-2hr6-jvqr

## What is CVE-2023-6229?

CVE-2023-6229 is a critical memory corruption vulnerability in Canon Inc. C1333P, published on 6 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflow in CPCA PDL Resource Download process of 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 v03.07 and earlier sold in Japan. Color imageCLASS LBP674C/Color imageCLASS X LBP1333C/Color imageCLASS MF750C Series/Color imageCLASS X MF1333C Series firmware v03.07 and earlier sold in US. i-SENSYS LBP673Cdw/C1333P/i-SENSYS MF750C Series/C1333i Series firmware v03.07 and earlier sold in Europe.

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

## Which versions are affected by CVE-2023-6229?

It affects 29 products.


Products: Canon I-Sensys Lbp673cdw Firmware, Canon I-Sensys Mf752cdw Firmware, Canon I-Sensys Mf754cdw Firmware, Canon I-Sensys X C1333i Firmware, Canon I-Sensys X C1333if Firmware, Canon I-Sensys X C1333p Firmware, Canon Lbp122dw Firmware, Canon Lbp1238 Ii Firmware, Canon Lbp1333c Firmware, Canon Lbp236dw Firmware, Canon Lbp237dw Firmware, Canon Lbp671c Firmware, Canon Lbp672c Firmware, Canon Lbp674c Firmware, Canon Lbp674cdw Firmware, Canon Mf1238 Ii Firmware, Canon Mf1333c Firmware, Canon Mf1643i Ii Firmware, Canon Mf1643if Ii Firmware, Canon Mf272dw Firmware and 9 more.

## How do I fix CVE-2023-6229?

No fix has been published for CVE-2023-6229 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6229 being exploited?

There is no known exploitation of CVE-2023-6229 in the wild and no public exploit code.

## Other vulnerabilities in Canon Inc. C1333P

- [CVE-2023-6230](https://insights.sbomify.com/CVE-2023-6230/): Memory corruption in C1333P (critical 9.8)
- [CVE-2023-6231](https://insights.sbomify.com/CVE-2023-6231/): Memory corruption in C1333P (critical 9.8)
- [CVE-2023-6232](https://insights.sbomify.com/CVE-2023-6232/): Memory corruption in C1333P (critical 9.8)
- [CVE-2023-6233](https://insights.sbomify.com/CVE-2023-6233/): Memory corruption in C1333P (critical 9.8)
- [CVE-2023-6234](https://insights.sbomify.com/CVE-2023-6234/): Memory corruption in C1333P (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6229 and fix it if it is affected.

What it is: CVE-2023-6229 is a critical memory corruption vulnerability in Canon Inc. C1333P, published on 6 Feb 2024. 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-2023-6229 in the wild and no public exploit code.

Affected product: Canon Inc. C1333P. 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-2023-6229/ (Markdown: https://insights.sbomify.com/CVE-2023-6229/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6229
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6229
- OSV: https://osv.dev/vulnerability/CVE-2023-6229

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6229/
Summaries are generated and may contain mistakes; the official description above is the record.