# CVE-2023-47565: QNAP VioStor NVR OS Command Injection

> Authenticated attackers can execute arbitrary OS commands on legacy QNAP VioStor NVR devices via network access.

- **Severity:** High 8.0 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 21 Dec 2023 (CISA KEV)
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Dec 2023
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-vj55-4r38-w2gh

## What is CVE-2023-47565?

CVE-2023-47565 is a high-severity command injection vulnerability in QNAP Systems Inc. VioStor NVR, published on 8 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An OS command injection vulnerability has been found to affect legacy QNAP VioStor NVR models running QVR Firmware 4.x. If exploited, the vulnerability could allow authenticated users to execute commands via a network.

We have already fixed the vulnerability in the following versions:

QVR Firmware 5.0.0 and later

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2023-47565?

It affects 1 product.


Products: Qnap Qvr Firmware.

## How do I fix CVE-2023-47565?

No fix has been published for CVE-2023-47565 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 11 Jan 2024.

## Is CVE-2023-47565 being exploited?

Yes. Attackers have exploited CVE-2023-47565 in the wild since at least 21 Dec 2023.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-47565 and fix it if it is affected.

What it is: CVE-2023-47565 is a high-severity command injection vulnerability in QNAP Systems Inc. VioStor NVR, published on 8 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2023-47565 in the wild since at least 21 Dec 2023.

Affected product: QNAP Systems Inc. VioStor NVR. 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-2023-47565/ (Markdown: https://insights.sbomify.com/CVE-2023-47565/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-47565
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-47565
- OSV: https://osv.dev/vulnerability/CVE-2023-47565

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-47565/
Summaries are generated and may contain mistakes; the official description above is the record.