# CVE-2023-27407: Command injection in SCALANCE LPE9403

> An authenticated remote attacker can execute arbitrary commands as root on Siemens SCALANCE LPE9403 devices via the web management interface.

- **Severity:** Critical 9.9 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 May 2023
- **Updated:** 28 Jan 2025
- **Also known as:** GHSA-p7q5-cvw2-cc4p

## What is CVE-2023-27407?

CVE-2023-27407 is a critical command injection vulnerability in Siemens SCALANCE LPE9403, published on 9 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The web based management of affected device does not properly validate user input, making it susceptible to command injection. This could allow an authenticated remote attacker to access the underlying operating system as the root user.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2023-27407?

It affects 1 product.


Products: Siemens Scalance Lpe9403 Firmware.

## How do I fix CVE-2023-27407?

No fix has been published for CVE-2023-27407 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27407 being exploited?

There is no known exploitation of CVE-2023-27407 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SCALANCE LPE9403

- [CVE-2025-27396](https://insights.sbomify.com/CVE-2025-27396/): Privilege escalation in SCALANCE LPE9403 (high 8.7)
- [CVE-2025-27392](https://insights.sbomify.com/CVE-2025-27392/): Command injection in SCALANCE LPE9403 (high 8.6)
- [CVE-2025-27393](https://insights.sbomify.com/CVE-2025-27393/): Command injection in SCALANCE LPE9403 (high 8.6)
- [CVE-2025-27394](https://insights.sbomify.com/CVE-2025-27394/): Command injection in SCALANCE LPE9403 (high 8.6)
- [CVE-2025-27395](https://insights.sbomify.com/CVE-2025-27395/): Path traversal in SCALANCE LPE9403 (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27407 and fix it if it is affected.

What it is: CVE-2023-27407 is a critical command injection vulnerability in Siemens SCALANCE LPE9403, published on 9 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-27407 in the wild and no public exploit code.

Affected product: Siemens SCALANCE LPE9403. 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-2023-27407/ (Markdown: https://insights.sbomify.com/CVE-2023-27407/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27407
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27407
- OSV: https://osv.dev/vulnerability/CVE-2023-27407

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27407/
Summaries are generated and may contain mistakes; the official description above is the record.