# CVE-2018-0665: Cross-site scripting in Biz Box Router N58i, N500, NVR500, and RTX810

> Administrative users can inject scripts into router configuration fields, potentially executing code in other administrators' browsers to compromise accounts.

- **Severity:** Medium 6.8 (`CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 9 Jan 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qj49-xjv5-g9qj

## What is CVE-2018-0665?

CVE-2018-0665 is a medium-severity cross-site scripting vulnerability in NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION Biz Box Router N58i, N500, NVR500, and RTX810, published on 9 Jan 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Yamaha routers RT57i Rev.8.00.95 and earlier, RT58i Rev.9.01.51 and earlier, NVR500 Rev.11.00.36 and earlier, RTX810 Rev.11.01.31 and earlier, allow an administrative user to embed arbitrary scripts to the configuration data through a certain form field of the configuration page, which may be executed on another administrative user's web browser. This is a different vulnerability from CVE-2018-0666.

## Which versions are affected by CVE-2018-0665?

It affects 4 products.


Products: Yamaha Nvr500 Firmware, Yamaha Rt57i Firmware, Yamaha Rt58i Firmware, Yamaha Rtx810 Firmware.

## How do I fix CVE-2018-0665?

No fix has been published for CVE-2018-0665 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0665 being exploited?

There is no known exploitation of CVE-2018-0665 in the wild and no public exploit code.

## Other vulnerabilities in NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION Biz Box Router N58i, N500, NVR500, and RTX810

- [CVE-2018-0666](https://insights.sbomify.com/CVE-2018-0666/): Cross-site scripting in Biz Box Router N58i, N500, NVR500, and RTX810 (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0665 and fix it if it is affected.

What it is: CVE-2018-0665 is a medium-severity cross-site scripting vulnerability in NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION Biz Box Router N58i, N500, NVR500, and RTX810, published on 9 Jan 2019. 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-2018-0665 in the wild and no public exploit code.

Affected product: NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION Biz Box Router N58i, N500, NVR500, and RTX810. 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-2018-0665/ (Markdown: https://insights.sbomify.com/CVE-2018-0665/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0665
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0665
- OSV: https://osv.dev/vulnerability/CVE-2018-0665

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0665/
Summaries are generated and may contain mistakes; the official description above is the record.