# CVE-2026-107917: Insufficient input validation vulnerability in NETGEAR R7300 router

> Authenticated local administrators can perform unauthorized actions on NETGEAR R7300 routers due to insufficient input validation in PPPoE setup.

- **Severity:** Medium 4.3 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/V:D/RE:L/U:Amber`)
- **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:** 13 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-c4rg-x772-7mg3

## What is CVE-2026-107917?

CVE-2026-107917 is a medium-severity missing authorization vulnerability in NETGEAR R7300DST, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Insufficient input validation vulnerability in the PPPoE Setup feature of NETGEAR R7300 router allows authenticated administrators connected to the local network to perform unauthorized actions on the router. This issue was identified through testing in a controlled research environment using a simulated version of the router's software and has not been confirmed on physical production devices.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-107917?


## How do I fix CVE-2026-107917?

No fix has been published for CVE-2026-107917 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-107917 being exploited?

There is no known exploitation of CVE-2026-107917 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-107917 and fix it if it is affected.

What it is: CVE-2026-107917 is a medium-severity missing authorization vulnerability in NETGEAR R7300DST, published on 13 Oct 2026. 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-2026-107917 in the wild and no public exploit code.

Affected product: NETGEAR R7300DST. 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-2026-107917/ (Markdown: https://insights.sbomify.com/CVE-2026-107917/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-107917
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-107917
- OSV: https://osv.dev/vulnerability/CVE-2026-107917

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-107917/
Summaries are generated and may contain mistakes; the official description above is the record.