# CVE-2021-28814: Improper Access Control Vulnerability in Helpdesk


- **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
- **Fix available:** No
- **Published:** 11 Jun 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-c3j9-jwrq-h9fm

## What is CVE-2021-28814?

CVE-2021-28814 is a high-severity vulnerability in QNAP Systems Inc. Helpdesk, published on 11 Jun 2021. 

### Official description

An improper access control vulnerability has been reported to affect QNAP NAS. If exploited, this vulnerability allows remote attackers to compromise the security of the software. This issue affects: QNAP Systems Inc. Helpdesk versions prior to 3.0.4.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2021-28814?

It affects 1 product.


Products: Qnap Helpdesk.

## How do I fix CVE-2021-28814?

No fix has been published for CVE-2021-28814 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-28814 being exploited?

There is no known exploitation of CVE-2021-28814 in the wild and no public exploit code.

## Other vulnerabilities in QNAP Systems Inc. Helpdesk

- [CVE-2020-2506](https://insights.sbomify.com/CVE-2020-2506/): QNAP Helpdesk Improper Access Control (high 7.3, exploited in the wild)
- [CVE-2020-2507](https://insights.sbomify.com/CVE-2020-2507/): command injection vulnerability in Helpdesk (critical 9.8)
- [CVE-2020-2500](https://insights.sbomify.com/CVE-2020-2500/): Hardcoded credentials in Helpdesk (critical 9.8)
- [CVE-2018-0714](https://insights.sbomify.com/CVE-2018-0714/): Command injection in Helpdesk in QTS (critical 9.8)
- [CVE-2024-50394](https://insights.sbomify.com/CVE-2024-50394/): Helpdesk (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-28814 and fix it if it is affected.

What it is: CVE-2021-28814 is a high-severity vulnerability in QNAP Systems Inc. Helpdesk, published on 11 Jun 2021. 
Exploitation: There is no known exploitation of CVE-2021-28814 in the wild and no public exploit code.

Affected product: QNAP Systems Inc. Helpdesk. 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-2021-28814/ (Markdown: https://insights.sbomify.com/CVE-2021-28814/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-28814
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-28814
- OSV: https://osv.dev/vulnerability/CVE-2021-28814

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-28814/
Summaries are generated and may contain mistakes; the official description above is the record.