# CVE-2020-25847: Command Injection Vulnerability in QTS and QuTS hero

> Attackers can execute arbitrary commands on QNAP NAS devices running QTS or QuTS hero, requiring an upgrade to patched versions.

- **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:** 29 Dec 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-8q2c-xwcr-7mj4

## What is CVE-2020-25847?

CVE-2020-25847 is a high-severity command injection vulnerability in Qnap Qts, published on 29 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

This command injection vulnerability allows attackers to execute arbitrary commands in a compromised application. QNAP have already fixed this vulnerability in the following versions of QTS and QuTS hero.

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-2020-25847?

It affects 2 products.


Products: Qnap Qts, Qnap Quts Hero.

## How do I fix CVE-2020-25847?

No fix has been published for CVE-2020-25847 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-25847 being exploited?

There is no known exploitation of CVE-2020-25847 in the wild and no public exploit code.

## Other vulnerabilities in Qnap Qts

- [CVE-2020-2509](https://insights.sbomify.com/CVE-2020-2509/): QNAP Network-Attached Storage (NAS) Command Injection (critical 9.8, exploited in the wild)
- [CVE-2018-19949](https://insights.sbomify.com/CVE-2018-19949/): QNAP NAS File Station Command Injection (critical 9.8, exploited in the wild)
- [CVE-2019-7193](https://insights.sbomify.com/CVE-2019-7193/): QNAP QTS Improper Input Validation (critical 9.8, exploited in the wild)
- [CVE-2018-19943](https://insights.sbomify.com/CVE-2018-19943/): QNAP NAS File Station Cross-Site Scripting (high 8.0, exploited in the wild)
- [CVE-2018-19953](https://insights.sbomify.com/CVE-2018-19953/): QNAP NAS File Station Cross-Site Scripting (medium 6.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-25847 and fix it if it is affected.

What it is: CVE-2020-25847 is a high-severity command injection vulnerability in Qnap Qts, published on 29 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-25847 in the wild and no public exploit code.

Affected product: Qnap Qts. 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-2020-25847/ (Markdown: https://insights.sbomify.com/CVE-2020-25847/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-25847
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-25847
- OSV: https://osv.dev/vulnerability/CVE-2020-25847

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-25847/
Summaries are generated and may contain mistakes; the official description above is the record.