# CVE-2023-28489: Command injection in CP-8031 MASTER MODULE

> Unauthenticated remote attackers can execute arbitrary code on Siemens CP-8031/8050 modules if Remote Operation is enabled.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Apr 2023
- **Updated:** 13 Feb 2025
- **Also known as:** GHSA-x9qv-5m74-x74p

## What is CVE-2023-28489?

CVE-2023-28489 is a critical command injection vulnerability in Siemens CP-8031 MASTER MODULE, published on 11 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05). Affected devices are vulnerable to command injection via the web server port 443/tcp, if the parameter “Remote Operation” is enabled. The parameter is disabled by default.
The vulnerability could allow an unauthenticated remote attacker to perform arbitrary code execution on the device.

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

## Which versions are affected by CVE-2023-28489?

It affects 2 products.


Products: Siemens Cp-8031 Firmware, Siemens Cp-8050 Firmware.

## How do I fix CVE-2023-28489?

No fix has been published for CVE-2023-28489 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28489 being exploited?

There is no known exploitation of CVE-2023-28489 in the wild and no public exploit code.

## Other vulnerabilities in Siemens CP-8031 MASTER MODULE

- [CVE-2023-36380](https://insights.sbomify.com/CVE-2023-36380/): Hardcoded credentials in CP-8031 MASTER MODULE (critical 9.8)
- [CVE-2023-42796](https://insights.sbomify.com/CVE-2023-42796/): Path traversal in CP-8031 MASTER MODULE (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28489 and fix it if it is affected.

What it is: CVE-2023-28489 is a critical command injection vulnerability in Siemens CP-8031 MASTER MODULE, published on 11 Apr 2023. 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-2023-28489 in the wild and no public exploit code.

Affected product: Siemens CP-8031 MASTER MODULE. 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-2023-28489/ (Markdown: https://insights.sbomify.com/CVE-2023-28489/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28489
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28489
- OSV: https://osv.dev/vulnerability/CVE-2023-28489

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-28489/
Summaries are generated and may contain mistakes; the official description above is the record.