# CVE-2022-21801: Denial of service in n/a

> An attacker can cause a Reolink IP camera to reboot by sending a specially crafted network request to the netserver component.

- **Severity:** High 8.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/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:** 28 Jan 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-93v6-cj2c-8c8g

## What is CVE-2022-21801?

CVE-2022-21801 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 28 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A denial of service vulnerability exists in the netserver recv_command functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-crafted network request can lead to a reboot. An attacker can send a malicious packet to trigger this vulnerability.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2022-21801?

It affects 1 product.


Products: Reolink Rlc-410w Firmware.

## How do I fix CVE-2022-21801?

No fix has been published for CVE-2022-21801 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-21801 being exploited?

There is no known exploitation of CVE-2022-21801 in the wild and no public exploit code.

## Other vulnerabilities in Reolink Rlc-410w Firmware

- [CVE-2021-40407](https://insights.sbomify.com/CVE-2021-40407/): Reolink RLC-410W IP Camera OS Command Injection Vulnerability (critical 9.1, exploited in the wild)
- [CVE-2021-40419](https://insights.sbomify.com/CVE-2021-40419/): Other in n/a (critical 10.0)
- [CVE-2022-21796](https://insights.sbomify.com/CVE-2022-21796/): Memory corruption in n/a (critical 9.3)
- [CVE-2021-40408](https://insights.sbomify.com/CVE-2021-40408/): Command injection in n/a (critical 9.1)
- [CVE-2021-40409](https://insights.sbomify.com/CVE-2021-40409/): Command injection in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21801 and fix it if it is affected.

What it is: CVE-2022-21801 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 28 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-2022-21801 in the wild and no public exploit code.

Affected product: Reolink Rlc-410w Firmware. 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-2022-21801/ (Markdown: https://insights.sbomify.com/CVE-2022-21801/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21801
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21801
- OSV: https://osv.dev/vulnerability/CVE-2022-21801

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-21801/
Summaries are generated and may contain mistakes; the official description above is the record.