# CVE-2024-42946: Memory corruption in n/a

> Attackers can cause a Denial of Service on Tenda FH1201 routers via a crafted POST request exploiting a stack overflow.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Aug 2024
- **Updated:** 16 Aug 2024
- **Also known as:** GHSA-3p9r-c4f8-vv7m

## What is CVE-2024-42946?

CVE-2024-42946 is a medium-severity memory corruption vulnerability in n/a, published on 15 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Tenda FH1201 v1.2.0.14 (408) was discovered to contain a stack overflow via the page parameter in the fromVirtualSer function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-42946?

It affects 1 product.


Products: Tenda Fh1201 Firmware.

## How do I fix CVE-2024-42946?

No fix has been published for CVE-2024-42946 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-42946 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42946 exists.

## Other vulnerabilities in n/a

- [CVE-2024-42947](https://insights.sbomify.com/CVE-2024-42947/): Command injection in n/a (critical 9.8)
- [CVE-2026-5045](https://insights.sbomify.com/CVE-2026-5045/): Tenda FH1201 Parameter WrlclientSet stack-based overflow (high 8.7)
- [CVE-2026-5046](https://insights.sbomify.com/CVE-2026-5046/): Tenda FH1201 Parameter WrlExtraSet formWrlExtraSet stack-based overflow (high 8.7)
- [CVE-2025-14994](https://insights.sbomify.com/CVE-2025-14994/): Tenda FH1201/FH1206 HTTP Request webtypelibrary strcat stack-based overflow (high 8.7)
- [CVE-2025-14995](https://insights.sbomify.com/CVE-2025-14995/): Tenda FH1201 SetIpBind sprintf stack-based overflow (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42946 and fix it if it is affected.

What it is: CVE-2024-42946 is a medium-severity memory corruption vulnerability in n/a, published on 15 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42946 exists.

Affected product: n/a. 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-2024-42946/ (Markdown: https://insights.sbomify.com/CVE-2024-42946/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42946
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42946
- OSV: https://osv.dev/vulnerability/CVE-2024-42946

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42946/
Summaries are generated and may contain mistakes; the official description above is the record.