# CVE-2017-18849: Command injection in n/a

> Attackers can execute arbitrary commands on vulnerable NETGEAR routers via command injection flaws.

- **Severity:** High 8.4 (`CVSS:3.0/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Apr 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-cxhv-qfhw-63ww

## What is CVE-2017-18849?

CVE-2017-18849 is a high-severity command injection vulnerability in Netgear D6220 Firmware, published on 20 Apr 2020. 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. This affects D6220 before 1.0.0.26, D6400 before 1.0.0.60, D8500 before 1.0.3.29, R6250 before 1.0.4.12, R6400 before 1.01.24, R6400v2 before 1.0.2.30, R6700 before 1.0.1.22, R6900 before 1.0.1.22, R6900P before 1.0.0.56, R7000 before 1.0.9.4, R7000P before 1.0.0.56, R7100LG before 1.0.0.32, R7300DST before 1.0.0.54, R7900 before 1.0.1.18, R8000 before 1.0.3.44, R8300 before 1.0.2.100_1.0.82, and R8500 before 1.0.2.100_1.0.82.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2017-18849?

It affects 16 products.


Products: Netgear D6220 Firmware, Netgear D6400 Firmware, Netgear D8500 Firmware, Netgear R6250 Firmware, Netgear R6400 Firmware, Netgear R6700 Firmware, Netgear R6900 Firmware, Netgear R6900p Firmware, Netgear R7000 Firmware, Netgear R7000p Firmware, Netgear R7100lg Firmware, Netgear R7300dst Firmware, Netgear R7900 Firmware, Netgear R8000 Firmware, Netgear R8300 Firmware, Netgear R8500 Firmware.

## How do I fix CVE-2017-18849?

No fix has been published for CVE-2017-18849 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-18849 being exploited?

There is no known exploitation of CVE-2017-18849 in the wild and no public exploit code.

## Other vulnerabilities in Netgear D6220 Firmware

- [CVE-2016-6277](https://insights.sbomify.com/CVE-2016-6277/): NETGEAR Multiple Routers Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2021-45527](https://insights.sbomify.com/CVE-2021-45527/): Memory corruption in n/a (critical 9.6)
- [CVE-2021-45610](https://insights.sbomify.com/CVE-2021-45610/): Memory corruption in n/a (critical 9.6)
- [CVE-2021-45638](https://insights.sbomify.com/CVE-2021-45638/): Memory corruption in n/a (critical 9.6)
- [CVE-2021-34982](https://insights.sbomify.com/CVE-2021-34982/): NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-18849 and fix it if it is affected.

What it is: CVE-2017-18849 is a high-severity command injection vulnerability in Netgear D6220 Firmware, published on 20 Apr 2020. 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-2017-18849 in the wild and no public exploit code.

Affected product: Netgear D6220 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-2017-18849/ (Markdown: https://insights.sbomify.com/CVE-2017-18849/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-18849
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-18849
- OSV: https://osv.dev/vulnerability/CVE-2017-18849

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-18849/
Summaries are generated and may contain mistakes; the official description above is the record.