# CVE-2017-18803: Misconfiguration in n/a

> Incorrect security settings in NETGEAR R7800 routers allow attackers to bypass security controls, requiring a firmware upgrade.

- **Severity:** Medium 6.2 (`CVSS:3.0/AC:L/AV:L/A:N/C:N/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:** 21 Apr 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-9rfp-vf6g-gxv7

## What is CVE-2017-18803?

CVE-2017-18803 is a medium-severity vulnerability in Netgear R7800 Firmware, published on 21 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

NETGEAR R7800 devices before 1.0.2.30 are affected by incorrect configuration of security settings.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-18803?

It affects 1 product.


Products: Netgear R7800 Firmware.

## How do I fix CVE-2017-18803?

No fix has been published for CVE-2017-18803 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-18803 being exploited?

There is no known exploitation of CVE-2017-18803 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R7800 Firmware

- [CVE-2020-11790](https://insights.sbomify.com/CVE-2020-11790/): Other in n/a (critical 9.4)
- [CVE-2018-21158](https://insights.sbomify.com/CVE-2018-21158/): Misconfiguration in n/a (high 8.8)
- [CVE-2019-20706](https://insights.sbomify.com/CVE-2019-20706/): Command injection in n/a (high 8.8)
- [CVE-2019-20707](https://insights.sbomify.com/CVE-2019-20707/): Command injection in n/a (high 8.8)
- [CVE-2021-45623](https://insights.sbomify.com/CVE-2021-45623/): Command injection in n/a (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-18803 and fix it if it is affected.

What it is: CVE-2017-18803 is a medium-severity vulnerability in Netgear R7800 Firmware, published on 21 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-2017-18803 in the wild and no public exploit code.

Affected product: Netgear R7800 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-2017-18803/ (Markdown: https://insights.sbomify.com/CVE-2017-18803/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-18803
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-18803
- OSV: https://osv.dev/vulnerability/CVE-2017-18803

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-18803/
Summaries are generated and may contain mistakes; the official description above is the record.