# CVE-2024-42987: Memory corruption in n/a

> A remote attacker can cause denial of service or potentially execute code via a stack-based buffer overflow in the Tenda FH1206 router.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Aug 2024
- **Updated:** 2 Sep 2025
- **Also known as:** GHSA-3p4h-pcqj-f7fx

## What is CVE-2024-42987?

CVE-2024-42987 is a high-severity memory corruption vulnerability in n/a, published on 15 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Tenda FH1206 v02.03.01.35 was discovered to contain a stack-based buffer overflow vulnerability in the fromPptpUserAdd function. The vulnerability can be triggered via the modino, username, newpwd, or pptpdnetseg parameters, all of which are passed via HTTP POST and used in unsafe sprintf calls without proper length validation. A remote attacker can exploit this flaw through a crafted POST request, which may cause a Denial of Service (DoS). In certain scenarios, this issue could potentially be leveraged to achieve remote code execution.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2024-42987?

It affects 1 product.


Products: Tenda Fh1206 Firmware.

## How do I fix CVE-2024-42987?

No fix has been published for CVE-2024-42987 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-42987 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42987 exists.

## Other vulnerabilities in n/a

- [CVE-2024-42978](https://insights.sbomify.com/CVE-2024-42978/): Command injection in n/a (critical 9.8)
- [CVE-2024-35339](https://insights.sbomify.com/CVE-2024-35339/): Command injection in n/a (critical 9.8)
- [CVE-2024-34943](https://insights.sbomify.com/CVE-2024-34943/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-34945](https://insights.sbomify.com/CVE-2024-34945/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-33215](https://insights.sbomify.com/CVE-2024-33215/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42987 and fix it if it is affected.

What it is: CVE-2024-42987 is a high-severity memory corruption vulnerability in n/a, published on 15 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42987 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-2024-42987/ (Markdown: https://insights.sbomify.com/CVE-2024-42987/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42987
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42987
- OSV: https://osv.dev/vulnerability/CVE-2024-42987

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42987/
Summaries are generated and may contain mistakes; the official description above is the record.