# CVE-2023-0638: TRENDnet TEW-811DRU Web Interface command injection

> Remote attackers can execute arbitrary commands on TRENDnet TEW-811DRU routers via the web interface.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Feb 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-5wwj-6v78-cpwh

## What is CVE-2023-0638?

CVE-2023-0638 is a high-severity command injection vulnerability in TRENDnet TEW-811DRU, published on 2 Feb 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability has been found in TRENDnet TEW-811DRU 1.0.10.0 and classified as critical. This vulnerability affects unknown code of the component Web Interface. The manipulation leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-220018 is the identifier assigned to this vulnerability.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2023-0638?

It affects 1 product.


Products: Trendnet Tew-811dru Firmware.

## How do I fix CVE-2023-0638?

No fix has been published for CVE-2023-0638 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0638 being exploited?

There is no known exploitation of CVE-2023-0638 in the wild and no public exploit code.

## Other vulnerabilities in TRENDnet TEW-811DRU

- [CVE-2025-15472](https://insights.sbomify.com/CVE-2025-15472/): TRENDnet TEW-811DRU httpd uapply.cgi setDeviceURL os command injection (high 8.6)
- [CVE-2023-0612](https://insights.sbomify.com/CVE-2023-0612/): TRENDnet TEW-811DRU httpd basic.asp buffer overflow (high 7.5)
- [CVE-2023-0613](https://insights.sbomify.com/CVE-2023-0613/): TRENDnet TEW-811DRU httpd security.asp memory corruption (high 7.5)
- [CVE-2023-0617](https://insights.sbomify.com/CVE-2023-0617/): TRENDNet TEW-811DRU httpd guestnetwork.asp buffer overflow (high 7.5)
- [CVE-2023-0637](https://insights.sbomify.com/CVE-2023-0637/): TRENDnet TEW-811DRU Web Management Interface wan.asp memory corruption (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0638 and fix it if it is affected.

What it is: CVE-2023-0638 is a high-severity command injection vulnerability in TRENDnet TEW-811DRU, published on 2 Feb 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-0638 in the wild and no public exploit code.

Affected product: TRENDnet TEW-811DRU. 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-2023-0638/ (Markdown: https://insights.sbomify.com/CVE-2023-0638/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0638
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0638
- OSV: https://osv.dev/vulnerability/CVE-2023-0638

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0638/
Summaries are generated and may contain mistakes; the official description above is the record.