# CVE-2017-18865: Memory corruption in n/a

> An authenticated user can trigger a stack-based buffer overflow in NETGEAR R8300 and R8500 routers, potentially leading to code execution or privilege escalation.

- **Severity:** Medium 6.8 (`CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/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:** 5 May 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-h66h-xh66-pg68

## What is CVE-2017-18865?

CVE-2017-18865 is a medium-severity memory corruption vulnerability in Netgear R8300 Firmware, published on 5 May 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 a stack-based buffer overflow by an authenticated user. This affects R8300 before 1.0.2.104 and R8500 before 1.0.2.104.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2017-18865?

It affects 2 products.


Products: Netgear R8300 Firmware, Netgear R8500 Firmware.

## How do I fix CVE-2017-18865?

No fix has been published for CVE-2017-18865 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-18865 being exploited?

There is no known exploitation of CVE-2017-18865 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R8300 Firmware

- [CVE-2020-25067](https://insights.sbomify.com/CVE-2020-25067/): Command injection in n/a (critical 9.6)
- [CVE-2017-18708](https://insights.sbomify.com/CVE-2017-18708/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2017-18707](https://insights.sbomify.com/CVE-2017-18707/): Memory corruption in n/a (medium 6.8)
- [CVE-2017-18759](https://insights.sbomify.com/CVE-2017-18759/): Memory corruption in n/a (medium 6.8)
- [CVE-2017-18710](https://insights.sbomify.com/CVE-2017-18710/): Information disclosure in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-18865 and fix it if it is affected.

What it is: CVE-2017-18865 is a medium-severity memory corruption vulnerability in Netgear R8300 Firmware, published on 5 May 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-2017-18865 in the wild and no public exploit code.

Affected product: Netgear R8300 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-2017-18865/ (Markdown: https://insights.sbomify.com/CVE-2017-18865/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-18865
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-18865
- OSV: https://osv.dev/vulnerability/CVE-2017-18865

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-18865/
Summaries are generated and may contain mistakes; the official description above is the record.