# CVE-2021-45549: Command injection in n/a

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

- **Severity:** High 8.4 (`CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **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-m6m8-v67p-7g6q

## What is CVE-2021-45549?

CVE-2021-45549 is a high-severity command injection vulnerability in Netgear R6400 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 LAX20 before 1.1.6.28, MK62 before 1.1.6.122, MR60 before 1.1.6.122, MS60 before 1.1.6.122, R6400v2 before 1.0.4.118, R6700v3 before 1.0.4.118, R6900P before 1.3.3.140, R7000 before 1.0.11.116, R7000P before 1.3.3.140, R7850 before 1.0.5.68, R7900 before 1.0.4.38, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.68, R8000P before 1.4.2.84, RAX15 before 1.0.3.96, RAX20 before 1.0.3.96, RAX200 before 1.0.4.120, RAX35v2 before 1.0.3.96, RAX40v2 before 1.0.3.96, RAX43 before 1.0.3.96, RAX45 before 1.0.3.96, RAX50 before 1.0.3.96, RAX75 before 1.0.4.120, RAX80 before 1.0.4.120, RS400 before 1.5.1.80, and XR1000 before 1.0.0.58.

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

## Which versions are affected by CVE-2021-45549?

It affects 27 products.


Products: Netgear Lax20 Firmware, Netgear Mk62 Firmware, Netgear Mr60 Firmware, Netgear Ms60 Firmware, Netgear R6400 Firmware, Netgear R6700 Firmware, Netgear R6900p Firmware, Netgear R7000 Firmware, Netgear R7000p Firmware, Netgear R7850 Firmware, Netgear R7900 Firmware, Netgear R7900p Firmware, Netgear R7960p Firmware, Netgear R8000 Firmware, Netgear R8000p Firmware, Netgear Rax15 Firmware, Netgear Rax200 Firmware, Netgear Rax20 Firmware, Netgear Rax35 Firmware, Netgear Rax40 Firmware and 7 more.

## How do I fix CVE-2021-45549?

No fix has been published for CVE-2021-45549 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45549 being exploited?

There is no known exploitation of CVE-2021-45549 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R6400 Firmware

- [CVE-2022-27645](https://insights.sbomify.com/CVE-2022-27645/): Auth bypass in R6700v3 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45549 and fix it if it is affected.

What it is: CVE-2021-45549 is a high-severity command injection vulnerability in Netgear R6400 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-2021-45549 in the wild and no public exploit code.

Affected product: Netgear R6400 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-2021-45549/ (Markdown: https://insights.sbomify.com/CVE-2021-45549/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45549
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45549
- OSV: https://osv.dev/vulnerability/CVE-2021-45549

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45549/
Summaries are generated and may contain mistakes; the official description above is the record.