# CVE-2024-42634: Command injection in n/a

> Attackers can execute arbitrary OS commands with root privileges via a command injection flaw in the Tenda AC9 router's httpd binary.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Aug 2024
- **Updated:** 16 Aug 2024
- **Also known as:** GHSA-4hmr-hm34-jj9g

## What is CVE-2024-42634?

CVE-2024-42634 is a critical command injection vulnerability in Tenda Ac9 Firmware, published on 16 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A Command Injection vulnerability exists in formWriteFacMac of the httpd binary in Tenda AC9 v15.03.06.42. As a result, attacker can execute OS commands with root privileges.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2024-42634?

It affects 1 product.


Products: Tenda Ac9 Firmware.

## How do I fix CVE-2024-42634?

No fix has been published for CVE-2024-42634 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-42634 being exploited?

There is no known exploitation of CVE-2024-42634 in the wild and no public exploit code.

## Other vulnerabilities in Tenda Ac9 Firmware

- [CVE-2025-45042](https://insights.sbomify.com/CVE-2025-45042/): Command injection in n/a (critical 9.8)
- [CVE-2025-44872](https://insights.sbomify.com/CVE-2025-44872/): Command injection in n/a (critical 9.8)
- [CVE-2025-44877](https://insights.sbomify.com/CVE-2025-44877/): Command injection in n/a (critical 9.8)
- [CVE-2025-45427](https://insights.sbomify.com/CVE-2025-45427/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45428](https://insights.sbomify.com/CVE-2025-45428/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42634 and fix it if it is affected.

What it is: CVE-2024-42634 is a critical command injection vulnerability in Tenda Ac9 Firmware, published on 16 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-42634 in the wild and no public exploit code.

Affected product: Tenda Ac9 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-2024-42634/ (Markdown: https://insights.sbomify.com/CVE-2024-42634/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42634
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42634
- OSV: https://osv.dev/vulnerability/CVE-2024-42634

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42634/
Summaries are generated and may contain mistakes; the official description above is the record.