# CVE-2024-12343: TP-Link VN020 F3v(T) SOAP Request WANIPConnection buffer overflow

> A buffer overflow in the SOAP request handler allows local attackers to execute arbitrary code or escalate privileges on the TP-Link VN020 F3v(T) device.

- **Severity:** High 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **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:** 8 Dec 2024
- **Updated:** 9 Dec 2024
- **Also known as:** GHSA-w44f-qrgh-jh53

## What is CVE-2024-12343?

CVE-2024-12343 is a high-severity memory corruption vulnerability in TP-Link VN020 F3v(T), published on 8 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in TP-Link VN020 F3v(T) TT_V6.2.1021. Affected is an unknown function of the file /control/WANIPConnection of the component SOAP Request Handler. The manipulation of the argument NewConnectionType leads to buffer overflow. The attack needs to be done within the local network. The exploit has been disclosed to the public and may be used.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2024-12343?

It affects 1 product.


Products: Tp-Link Vn020 F3v Firmware.

## How do I fix CVE-2024-12343?

No fix has been published for CVE-2024-12343 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-12343 being exploited?

There is no known exploitation of CVE-2024-12343 in the wild and no public exploit code.

## Other vulnerabilities in TP-Link VN020 F3v(T)

- [CVE-2024-12344](https://insights.sbomify.com/CVE-2024-12344/): TP-Link VN020 F3v(T) FTP USER Command memory corruption (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-12343 and fix it if it is affected.

What it is: CVE-2024-12343 is a high-severity memory corruption vulnerability in TP-Link VN020 F3v(T), published on 8 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-12343 in the wild and no public exploit code.

Affected product: TP-Link VN020 F3v(T). 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-2024-12343/ (Markdown: https://insights.sbomify.com/CVE-2024-12343/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-12343
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-12343
- OSV: https://osv.dev/vulnerability/CVE-2024-12343

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-12343/
Summaries are generated and may contain mistakes; the official description above is the record.