# CVE-2023-36859: PiiGAB M-Bus Code Injection

> Attackers can inject arbitrary commands into PiiGAB M-Bus SoftwarePack due to improper input sanitization, risking system compromise.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 6 Jul 2023
- **Updated:** 14 Nov 2024
- **Also known as:** GHSA-gqmc-qc62-72h3

## What is CVE-2023-36859?

CVE-2023-36859 is a high-severity code injection vulnerability in PiiGAB  M-Bus SoftwarePack, published on 6 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

PiiGAB M-Bus 

SoftwarePack 900S

does not correctly sanitize user input, which could allow an attacker to inject arbitrary commands.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-36859?

It affects 1 product.


Products: Piigab M-Bus 900s Firmware.

## How do I fix CVE-2023-36859?

No fix has been published for CVE-2023-36859 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-36859 being exploited?

There is no known exploitation of CVE-2023-36859 in the wild and no public exploit code.

## Other vulnerabilities in PiiGAB  M-Bus SoftwarePack

- [CVE-2023-35987](https://insights.sbomify.com/CVE-2023-35987/): PiiGAB M-Bus Use of Hard-coded Credentials (critical 9.8)
- [CVE-2023-35120](https://insights.sbomify.com/CVE-2023-35120/): PiiGAB M-Bus Cross-Site Request Forgery (high 8.8)
- [CVE-2023-32652](https://insights.sbomify.com/CVE-2023-32652/): PiiGAB M-Bus Cross-site Scripting (high 8.0)
- [CVE-2023-31277](https://insights.sbomify.com/CVE-2023-31277/): PiiGAB M-Bus Unprotected Transport of Credentials (high 7.5)
- [CVE-2023-34433](https://insights.sbomify.com/CVE-2023-34433/): PiiGAB M-Bus Use of Password Hash With Insufficient Computational Effort (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-36859 and fix it if it is affected.

What it is: CVE-2023-36859 is a high-severity code injection vulnerability in PiiGAB  M-Bus SoftwarePack, published on 6 Jul 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-2023-36859 in the wild and no public exploit code.

Affected product: PiiGAB  M-Bus SoftwarePack. 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-2023-36859/ (Markdown: https://insights.sbomify.com/CVE-2023-36859/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-36859
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-36859
- OSV: https://osv.dev/vulnerability/CVE-2023-36859

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-36859/
Summaries are generated and may contain mistakes; the official description above is the record.