# CVE-2021-46560: Command injection in n/a

> Command injection in Moxa TN-5900 firmware allows attackers to execute arbitrary commands, potentially damaging the device.

- **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:** 26 Jan 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qmgg-g8c3-8959

## What is CVE-2021-46560?

CVE-2021-46560 is a critical command injection vulnerability in n/a, published on 26 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The firmware on Moxa TN-5900 devices through 3.1 allows command injection that could lead to device damage.

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

## Which versions are affected by CVE-2021-46560?

It affects 1 product.


Products: Moxa Tn-5900 Firmware.

## How do I fix CVE-2021-46560?

No fix has been published for CVE-2021-46560 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-46560 being exploited?

There is no known exploitation of CVE-2021-46560 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-33237](https://insights.sbomify.com/CVE-2023-33237/): Authentication Bypass Without Administrator Privilege (high 8.8)
- [CVE-2023-34213](https://insights.sbomify.com/CVE-2023-34213/): Second Order Command-injection Vulnerability in the Key-generation Function (high 8.8)
- [CVE-2021-46559](https://insights.sbomify.com/CVE-2021-46559/): Weak cryptography in n/a (high 7.5)
- [CVE-2023-34215](https://insights.sbomify.com/CVE-2023-34215/): Second Order Command-injection Vulnerability in the Certificate-generation Function (high 7.2)
- [CVE-2023-3336](https://insights.sbomify.com/CVE-2023-3336/): TN-5900 Series User Enumeration Vulnerability (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-46560 and fix it if it is affected.

What it is: CVE-2021-46560 is a critical command injection vulnerability in n/a, published on 26 Jan 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-2021-46560 in the wild and no public exploit code.

Affected product: n/a. 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-2021-46560/ (Markdown: https://insights.sbomify.com/CVE-2021-46560/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-46560
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-46560
- OSV: https://osv.dev/vulnerability/CVE-2021-46560

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-46560/
Summaries are generated and may contain mistakes; the official description above is the record.