# CVE-2023-42138: Memory corruption in KV REPLAY VIEWER

> Attackers can disclose information or execute arbitrary code by tricking users into opening a specially crafted file in KEYENCE KV STUDIO or REPLAY VIEWER.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Oct 2023
- **Updated:** 18 Sep 2024
- **Also known as:** GHSA-vrhf-c5fv-mpg6

## What is CVE-2023-42138?

CVE-2023-42138 is a high-severity memory corruption vulnerability in KEYENCE CORPORATION KV REPLAY VIEWER, published on 11 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Out-of-bounds read vulnerability exists in KV STUDIO Ver. 11.62 and earlier and KV REPLAY VIEWER Ver. 2.62 and earlier. If this vulnerability is exploited, information may be disclosed or arbitrary code may be executed by having a user of KV STUDIO PLAYER open a specially crafted file.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2023-42138?

It affects 2 products.


Products: Keyence Kv Replay Viewer, Keyence Kv Studio.

## How do I fix CVE-2023-42138?

No fix has been published for CVE-2023-42138 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-42138 being exploited?

There is no known exploitation of CVE-2023-42138 in the wild and no public exploit code.

## Other vulnerabilities in KEYENCE CORPORATION KV REPLAY VIEWER

- [CVE-2024-29218](https://insights.sbomify.com/CVE-2024-29218/): Memory corruption in KV REPLAY VIEWER (high 8.8)
- [CVE-2024-29219](https://insights.sbomify.com/CVE-2024-29219/): Memory corruption in KV REPLAY VIEWER (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-42138 and fix it if it is affected.

What it is: CVE-2023-42138 is a high-severity memory corruption vulnerability in KEYENCE CORPORATION KV REPLAY VIEWER, published on 11 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-42138 in the wild and no public exploit code.

Affected product: KEYENCE CORPORATION KV REPLAY VIEWER. 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-2023-42138/ (Markdown: https://insights.sbomify.com/CVE-2023-42138/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-42138
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-42138
- OSV: https://osv.dev/vulnerability/CVE-2023-42138

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-42138/
Summaries are generated and may contain mistakes; the official description above is the record.