# CVE-2025-11546: Command injection in CLUSTERPRO X SingleServerSafe for Linux (EXPRESSCLUSTER X SingleServerSafe for Linux)

> Attackers can execute arbitrary OS commands without authentication by sending crafted network packets to NEC CLUSTERPRO X for Linux.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Nov 2025
- **Updated:** 7 Nov 2025
- **Also known as:** GHSA-hxh9-cj4v-cqch

## What is CVE-2025-11546?

CVE-2025-11546 is a critical command injection vulnerability in NEC Corporation CLUSTERPRO X SingleServerSafe for Linux (EXPRESSCLUSTER X SingleServerSafe for Linux), published on 7 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

CLUSTERPRO X for Linux 4.0, 4.1, 4.2, 5.0, 5.1 and 5.2 and EXPRESSCLUSTER X for Linux 4.0, 4.1, 4.2, 5.0, 5.1 and 5.2, CLUSTERPRO X SingleServerSafe for Linux 4.0, 4.1, 4.2, 5.0, 5.1 and 5.2, EXPRESSCLUSTER X SingleServerSafe for Linux 4.0, 4.1, 4.2, 5.0, 5.1 and 5.2 allows an attacker sends specially crafted network packets to the product, arbitrary OS commands may be executed without authentication.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2025-11546?


## How do I fix CVE-2025-11546?

No fix has been published for CVE-2025-11546 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-11546 being exploited?

There is no known exploitation of CVE-2025-11546 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-11546 and fix it if it is affected.

What it is: CVE-2025-11546 is a critical command injection vulnerability in NEC Corporation CLUSTERPRO X SingleServerSafe for Linux (EXPRESSCLUSTER X SingleServerSafe for Linux), published on 7 Nov 2025. 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-2025-11546 in the wild and no public exploit code.

Affected product: NEC Corporation CLUSTERPRO X SingleServerSafe for Linux (EXPRESSCLUSTER X SingleServerSafe for Linux). 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-2025-11546/ (Markdown: https://insights.sbomify.com/CVE-2025-11546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-11546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-11546
- OSV: https://osv.dev/vulnerability/CVE-2025-11546

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-11546/
Summaries are generated and may contain mistakes; the official description above is the record.