# CVE-2022-34823: Memory corruption in CLUSTERPRO X

> Remote unauthenticated attackers can exploit a buffer overflow in NEC cluster software to overwrite files and execute arbitrary code.

- **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:** 8 Nov 2022
- **Updated:** 2 May 2025
- **Also known as:** GHSA-qq8m-wq89-2wqp

## What is CVE-2022-34823?

CVE-2022-34823 is a critical memory corruption vulnerability in NEC Corporation CLUSTERPRO X, published on 8 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflow vulnerability in CLUSTERPRO X 5.0 for Windows and earlier, EXPRESSCLUSTER X 5.0 for Windows and earlier, CLUSTERPRO X 5.0 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 5.0 SingleServerSafe for Windows and earlier allows a remote unauthenticated attacker to overwrite existing files on the file system and to potentially execute arbitrary code.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2022-34823?

It affects 2 products.


Products: Nec Expresscluster X, Nec Expresscluster X Singleserversafe.

## How do I fix CVE-2022-34823?

No fix has been published for CVE-2022-34823 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-34823 being exploited?

There is no known exploitation of CVE-2022-34823 in the wild and no public exploit code.

## Other vulnerabilities in NEC Corporation CLUSTERPRO X

- [CVE-2022-34822](https://insights.sbomify.com/CVE-2022-34822/): Path traversal in CLUSTERPRO X (critical 9.8)
- [CVE-2022-34824](https://insights.sbomify.com/CVE-2022-34824/): Path traversal in CLUSTERPRO X (critical 9.8)
- [CVE-2022-34825](https://insights.sbomify.com/CVE-2022-34825/): Path traversal in CLUSTERPRO X (critical 9.8)
- [CVE-2023-39544](https://insights.sbomify.com/CVE-2023-39544/): Auth bypass in CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe) (high 8.8)
- [CVE-2023-39545](https://insights.sbomify.com/CVE-2023-39545/): Command injection in CLUSTERPRO X (EXPRESSCLUSTER X) (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-34823 and fix it if it is affected.

What it is: CVE-2022-34823 is a critical memory corruption vulnerability in NEC Corporation CLUSTERPRO X, published on 8 Nov 2022. 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-2022-34823 in the wild and no public exploit code.

Affected product: NEC Corporation CLUSTERPRO X. 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-2022-34823/ (Markdown: https://insights.sbomify.com/CVE-2022-34823/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-34823
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-34823
- OSV: https://osv.dev/vulnerability/CVE-2022-34823

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-34823/
Summaries are generated and may contain mistakes; the official description above is the record.