# CVE-2021-44354: Denial of service in RLC-410W

> Attackers can cause a reboot of Reolink cameras by sending specially crafted HTTP requests to the JSON command parser.

- **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:** 14 Apr 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-5fjh-hx62-xww9

## What is CVE-2021-44354?

CVE-2021-44354 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 14 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-44354?

It affects 1 product.


Products: Reolink Rlc-410w Firmware.

## How do I fix CVE-2021-44354?

No fix has been published for CVE-2021-44354 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44354 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-44354 exists.

## 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-2021-44354 and fix it if it is affected.

What it is: CVE-2021-44354 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 14 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-44354 exists.

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-2021-44354/ (Markdown: https://insights.sbomify.com/CVE-2021-44354/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44354
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44354
- OSV: https://osv.dev/vulnerability/CVE-2021-44354

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-44354/
Summaries are generated and may contain mistakes; the official description above is the record.