# CVE-2022-29518: Auth bypass in Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool

> Local attackers can bypass authentication in Koyo Electronics HMI tools to read, modify, or delete data and illegally operate connected equipment.

- **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 May 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-8865-jmrq-w257

## What is CVE-2022-29518?

CVE-2022-29518 is a high-severity authentication bypass vulnerability in KOYO ELECTRONICS INDUSTRIES CO., LTD. Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool, published on 18 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool Screen Creator Advance2 versions prior to Ver.0.1.1.3 Build01, HMI GC-A2 series(GC-A22W-CW, GC-A24W-C(W), GC-A26W-C(W), GC-A24, GC-A24-M, GC-A25, GC-A26, and GC-A26-J2), and Real time remote monitoring and control tool(Remote GC) allows a local attacker to bypass authentication due to the improper check for the Remote control setting's account names. This may allow attacker who can access the HMI from Real time remote monitoring and control tool may perform arbitrary operations on the HMI. As a result, the information stored in the HMI may be disclosed, deleted or altered, and/or the equipment may be illegally operated via the HMI.

## Which versions are affected by CVE-2022-29518?

It affects 10 products.


Products: Koyoele Gc-A22w-Cw Firmware, Koyoele Gc-A24-M Firmware, Koyoele Gc-A24 Firmware, Koyoele Gc-A24w-C\(w\) Firmware, Koyoele Gc-A25 Firmware, Koyoele Gc-A26-J2 Firmware, Koyoele Gc-A26 Firmware, Koyoele Gc-A26w-C\(w\) Firmware, Koyoele Remote Gc, Koyoele Screen Creator Advance 2.

## How do I fix CVE-2022-29518?

No fix has been published for CVE-2022-29518 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-29518 being exploited?

There is no known exploitation of CVE-2022-29518 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-29518 and fix it if it is affected.

What it is: CVE-2022-29518 is a high-severity authentication bypass vulnerability in KOYO ELECTRONICS INDUSTRIES CO., LTD. Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool, published on 18 May 2022. 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-2022-29518 in the wild and no public exploit code.

Affected product: KOYO ELECTRONICS INDUSTRIES CO., LTD. Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool. 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-2022-29518/ (Markdown: https://insights.sbomify.com/CVE-2022-29518/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-29518
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-29518
- OSV: https://osv.dev/vulnerability/CVE-2022-29518

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-29518/
Summaries are generated and may contain mistakes; the official description above is the record.