# CVE-2019-20717: Denial of service in n/a

> Attackers can cause denial of service on various NETGEAR routers and extenders by exploiting a vulnerability in the firmware.

- **Severity:** Medium 4.3 (`CVSS:3.0/AC:L/AV:A/A:L/C:N/I:N/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:** 16 Apr 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-g4ph-3r63-c5p9

## What is CVE-2019-20717?

CVE-2019-20717 is a medium-severity denial of service vulnerability in Netgear D3600 Firmware, published on 16 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 denial of service. This affects D3600 before 1.0.0.75, D6000 before 1.0.0.75, D7800 before 1.0.1.44, EX2700 before 1.0.1.52, EX6200v2 before 1.0.1.74, EX8000 before 1.0.1.180, R7500v2 before 1.0.3.38, R7800 before 1.0.2.58, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, RBS50 before 2.3.0.32, RBS40 before 2.3.0.28, SRK60 before 2.2.1.210, SRR60 before 2.2.1.210, SRS60 before 2.2.1.210, WN2000RPTv3 before 1.0.1.34, WN3000RPv2 before 1.0.0.68, WN3000RPv3 before 1.0.2.70, WN3100RPv2 before 1.0.0.60, WNDR4300v2 before 1.0.0.58, and WNDR4500v3 before 1.0.0.58.

## Which versions are affected by CVE-2019-20717?

It affects 23 products.


Products: Netgear D3600 Firmware, Netgear D6000 Firmware, Netgear D7800 Firmware, Netgear Ex2700 Firmware, Netgear Ex6200 Firmware, Netgear Ex8000 Firmware, Netgear R7500 Firmware, Netgear R7800 Firmware, Netgear Rbk20 Firmware, Netgear Rbk50 Firmware, Netgear Rbr20 Firmware, Netgear Rbr50 Firmware, Netgear Rbs20 Firmware, Netgear Rbs40 Firmware, Netgear Rbs50 Firmware, Netgear Srk60 Firmware, Netgear Srr60 Firmware, Netgear Srs60 Firmware, Netgear Wn2000rpt Firmware, Netgear Wn3000rp Firmware and 3 more.

## How do I fix CVE-2019-20717?

No fix has been published for CVE-2019-20717 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-20717 being exploited?

There is no known exploitation of CVE-2019-20717 in the wild and no public exploit code.

## Other vulnerabilities in Netgear D3600 Firmware

- [CVE-2020-35799](https://insights.sbomify.com/CVE-2020-35799/): Memory corruption in n/a (high 8.8)
- [CVE-2018-21207](https://insights.sbomify.com/CVE-2018-21207/): Memory corruption in n/a (high 8.8)
- [CVE-2018-21210](https://insights.sbomify.com/CVE-2018-21210/): Memory corruption in n/a (high 8.8)
- [CVE-2018-21211](https://insights.sbomify.com/CVE-2018-21211/): Memory corruption in n/a (high 8.8)
- [CVE-2018-21212](https://insights.sbomify.com/CVE-2018-21212/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-20717 and fix it if it is affected.

What it is: CVE-2019-20717 is a medium-severity denial of service vulnerability in Netgear D3600 Firmware, published on 16 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-2019-20717 in the wild and no public exploit code.

Affected product: Netgear D3600 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-2019-20717/ (Markdown: https://insights.sbomify.com/CVE-2019-20717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-20717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-20717
- OSV: https://osv.dev/vulnerability/CVE-2019-20717

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-20717/
Summaries are generated and may contain mistakes; the official description above is the record.