# CVE-2023-2061: Authentication bypass vulnerability in MELSEC iQ-R Series / iQ-F Series EtherNet/IP Modules

> Remote attackers can bypass authentication and access Mitsubishi EtherNet/IP modules via FTP using a hard-coded password.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jun 2023
- **Updated:** 5 Mar 2025
- **Also known as:** GHSA-2fjm-qc6m-8q8h

## What is CVE-2023-2061?

CVE-2023-2061 is a medium-severity vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP, published on 2 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Use of Hard-coded Password vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP allows a remote unauthenticated attacker to obtain a hard-coded password and access to the module via FTP.

Weakness: CWE-798 (Use of Hard-coded Credentials), CWE-259 (Use of Hard-coded Password)

## Which versions are affected by CVE-2023-2061?

It affects 4 products.


Products: Mitsubishielectric Fx5-Enet\/Ip Firmware, Mitsubishielectric Rj71eip91 Firmware, Mitsubishielectric Sw1dnn-Eipct-Bd Firmware, Mitsubishielectric Sw1dnn-Eipctfx5-Bd Firmware.

## How do I fix CVE-2023-2061?

No fix has been published for CVE-2023-2061 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2061 being exploited?

There is no known exploitation of CVE-2023-2061 in the wild and no public exploit code.

## Other vulnerabilities in Mitsubishi Electric Corporation MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP

- [CVE-2023-2060](https://insights.sbomify.com/CVE-2023-2060/): Authentication bypass vulnerability in MELSEC iQ-R Series / iQ-F Series EtherNet/IP Modules (high 7.5)
- [CVE-2023-0457](https://insights.sbomify.com/CVE-2023-0457/): Information Disclosure Vulnerability in MELSEC Series (high 7.5)
- [CVE-2023-2063](https://insights.sbomify.com/CVE-2023-2063/): File upload in MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP (medium 6.3)
- [CVE-2023-2062](https://insights.sbomify.com/CVE-2023-2062/): Information Disclosure vulnerability in EtherNet/IP Configuration tools (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2061 and fix it if it is affected.

What it is: CVE-2023-2061 is a medium-severity vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP, published on 2 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-2061 in the wild and no public exploit code.

Affected product: Mitsubishi Electric Corporation MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP. 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-2023-2061/ (Markdown: https://insights.sbomify.com/CVE-2023-2061/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2061
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2061
- OSV: https://osv.dev/vulnerability/CVE-2023-2061

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-2061/
Summaries are generated and may contain mistakes; the official description above is the record.