# CVE-2021-45551: Command injection in n/a

> Authenticated attackers can execute arbitrary commands on various NETGEAR routers via command injection vulnerabilities.

- **Severity:** High 7.6 (`CVSS:3.1/AC:L/AV:A/A:L/C:H/I:H/PR:L/S:U/UI:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-fxgh-826p-6cx6

## What is CVE-2021-45551?

CVE-2021-45551 is a high-severity command injection vulnerability in Netgear D6200 Firmware, published on 26 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D6200 before 1.1.00.40, D7000 before 1.0.1.78, R6020 before 1.0.0.42, R6080 before 1.0.0.42, R6050 before 1.0.1.26, JR6150 before 1.0.1.26, R6120 before 1.0.0.66, R6220 before 1.1.0.110, R6230 before 1.1.0.110, R6260 before 1.1.0.64, R6800 before 1.2.0.62, R6700v2 before 1.2.0.62, R6900v2 before 1.2.0.62, R7450 before 1.2.0.62, AC2100 before 1.2.0.62, AC2400 before 1.2.0.62, AC2600 before 1.2.0.62, and WNR2020 before 1.1.0.62.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2021-45551?

It affects 18 products.


Products: Netgear Ac2100 Firmware, Netgear Ac2400 Firmware, Netgear Ac2600 Firmware, Netgear D6200 Firmware, Netgear D7000 Firmware, Netgear Jr6150 Firmware, Netgear R6020 Firmware, Netgear R6050 Firmware, Netgear R6080 Firmware, Netgear R6120 Firmware, Netgear R6220 Firmware, Netgear R6230 Firmware, Netgear R6260 Firmware, Netgear R6700v2 Firmware, Netgear R6800 Firmware, Netgear R6900v2 Firmware, Netgear R7450 Firmware, Netgear Wnr2020 Firmware.

## How do I fix CVE-2021-45551?

No fix has been published for CVE-2021-45551 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45551 being exploited?

There is no known exploitation of CVE-2021-45551 in the wild and no public exploit code.

## Other vulnerabilities in Netgear D6200 Firmware

- [CVE-2021-38516](https://insights.sbomify.com/CVE-2021-38516/): Missing authorization in n/a (critical 10.0)
- [CVE-2021-29068](https://insights.sbomify.com/CVE-2021-29068/): Memory corruption in n/a (critical 9.9)
- [CVE-2020-35795](https://insights.sbomify.com/CVE-2020-35795/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-35800](https://insights.sbomify.com/CVE-2020-35800/): Misconfiguration in n/a (critical 9.4)
- [CVE-2020-26927](https://insights.sbomify.com/CVE-2020-26927/): Auth bypass in n/a (critical 9.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45551 and fix it if it is affected.

What it is: CVE-2021-45551 is a high-severity command injection vulnerability in Netgear D6200 Firmware, published on 26 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-45551 in the wild and no public exploit code.

Affected product: Netgear D6200 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-2021-45551/ (Markdown: https://insights.sbomify.com/CVE-2021-45551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45551
- OSV: https://osv.dev/vulnerability/CVE-2021-45551

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45551/
Summaries are generated and may contain mistakes; the official description above is the record.