# CVE-2023-43886: Memory corruption in n/a

> An authenticated attacker can exploit a buffer overflow in the Tenda RX9 Pro HTTP server to overwrite memory, potentially leading to code execution.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Nov 2023
- **Updated:** 5 Sep 2024
- **Also known as:** GHSA-764w-jhrm-cmvw

## What is CVE-2023-43886?

CVE-2023-43886 is a high-severity memory corruption vulnerability in n/a, published on 7 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A buffer overflow in the HTTP server component of Tenda RX9 Pro v22.03.02.20 might allow an authenticated attacker to overwrite memory.

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

## Which versions are affected by CVE-2023-43886?

It affects 1 product.


Products: Tenda Rx9 Pro Firmware.

## How do I fix CVE-2023-43886?

No fix has been published for CVE-2023-43886 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-43886 being exploited?

There is no known exploitation of CVE-2023-43886 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-38829](https://insights.sbomify.com/CVE-2022-38829/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-38830](https://insights.sbomify.com/CVE-2022-38830/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-38831](https://insights.sbomify.com/CVE-2022-38831/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-10351](https://insights.sbomify.com/CVE-2024-10351/): Tenda RX9 Pro POST Request setMacFilterCfg sub_424CE0 stack-based overflow (high 8.7)
- [CVE-2024-10281](https://insights.sbomify.com/CVE-2024-10281/): Tenda RX9/RX9 Pro SetStaticRouteCfg sub_42EEE0 stack-based overflow (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43886 and fix it if it is affected.

What it is: CVE-2023-43886 is a high-severity memory corruption vulnerability in n/a, published on 7 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-43886 in the wild and no public exploit code.

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-2023-43886/ (Markdown: https://insights.sbomify.com/CVE-2023-43886/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43886
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43886
- OSV: https://osv.dev/vulnerability/CVE-2023-43886

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-43886/
Summaries are generated and may contain mistakes; the official description above is the record.