# CVE-2020-2490: Command injection in QTS

> Remote attackers can execute arbitrary commands on QNAP NAS devices via a command injection vulnerability in the QTS operating system.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Nov 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-2q45-953f-m2g9

## What is CVE-2020-2490?

CVE-2020-2490 is a high-severity command injection vulnerability in Qnap Qts, published on 16 Nov 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

If exploited, the command injection vulnerability could allow remote attackers to execute arbitrary commands. This issue affects: QNAP Systems Inc. QTS versions prior to 4.4.3.1421 on build 20200907.

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-2020-2490?

It affects 1 product.


Products: Qnap Qts.

## How do I fix CVE-2020-2490?

No fix has been published for CVE-2020-2490 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-2490 being exploited?

There is no known exploitation of CVE-2020-2490 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-2020-2490 and fix it if it is affected.

What it is: CVE-2020-2490 is a high-severity command injection vulnerability in Qnap Qts, published on 16 Nov 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-2490 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-2020-2490/ (Markdown: https://insights.sbomify.com/CVE-2020-2490/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-2490
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-2490
- OSV: https://osv.dev/vulnerability/CVE-2020-2490

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-2490/
Summaries are generated and may contain mistakes; the official description above is the record.