# CVE-2020-12125: Memory corruption in n/a

> Remote attackers can execute arbitrary code as root on WAVLINK routers via a buffer overflow in the makeRequest.cgi endpoint without authentication.

- **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:** 2 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5fwv-f3m5-wrpg

## What is CVE-2020-12125?

CVE-2020-12125 is a critical memory corruption vulnerability in n/a, published on 2 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A remote buffer overflow vulnerability in the /cgi-bin/makeRequest.cgi endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to execute arbitrary machine instructions as root without authentication.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2020-12125?

It affects 1 product.


Products: Wavlink Wn530h4 Firmware.

## How do I fix CVE-2020-12125?

No fix has been published for CVE-2020-12125 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-12125 being exploited?

There is no known exploitation of CVE-2020-12125 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-35519](https://insights.sbomify.com/CVE-2022-35519/): Command injection in n/a (critical 9.8)
- [CVE-2022-35520](https://insights.sbomify.com/CVE-2022-35520/): Command injection in n/a (critical 9.8)
- [CVE-2022-35521](https://insights.sbomify.com/CVE-2022-35521/): Command injection in n/a (critical 9.8)
- [CVE-2022-35522](https://insights.sbomify.com/CVE-2022-35522/): Command injection in n/a (critical 9.8)
- [CVE-2022-35523](https://insights.sbomify.com/CVE-2022-35523/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-12125 and fix it if it is affected.

What it is: CVE-2020-12125 is a critical memory corruption vulnerability in n/a, published on 2 Oct 2020. 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-2020-12125 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-2020-12125/ (Markdown: https://insights.sbomify.com/CVE-2020-12125/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-12125
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-12125
- OSV: https://osv.dev/vulnerability/CVE-2020-12125

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-12125/
Summaries are generated and may contain mistakes; the official description above is the record.