# CVE-2020-15490: Memory corruption in n/a

> Buffer overflows in Wavlink router CGI scripts allow remote attackers to execute arbitrary code with root privileges.

- **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:** 1 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qhq8-g585-gvrr

## What is CVE-2020-15490?

CVE-2020-15490 is a critical memory corruption vulnerability in n/a, published on 1 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered on Wavlink WL-WN530HG4 M30HG4.V5030.191116 devices. Multiple buffer overflow vulnerabilities exist in CGI scripts, leading to remote code execution with root privileges. (The set of affected scripts is similar to CVE-2020-12266.)

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

## Which versions are affected by CVE-2020-15490?

It affects 1 product.


Products: Wavlink Wl-Wn530hg4 Firmware.

## How do I fix CVE-2020-15490?

No fix has been published for CVE-2020-15490 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-15490 being exploited?

There is no known exploitation of CVE-2020-15490 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-34045](https://insights.sbomify.com/CVE-2022-34045/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2020-15489](https://insights.sbomify.com/CVE-2020-15489/): Command injection in n/a (critical 9.8)
- [CVE-2020-10971](https://insights.sbomify.com/CVE-2020-10971/): Command injection in n/a (high 8.8)
- [CVE-2022-48166](https://insights.sbomify.com/CVE-2022-48166/): Missing authorization in n/a (high 7.5)
- [CVE-2022-34047](https://insights.sbomify.com/CVE-2022-34047/): Information disclosure in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-15490 and fix it if it is affected.

What it is: CVE-2020-15490 is a critical memory corruption vulnerability in n/a, published on 1 Jul 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-2020-15490 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-2020-15490/ (Markdown: https://insights.sbomify.com/CVE-2020-15490/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-15490
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-15490
- OSV: https://osv.dev/vulnerability/CVE-2020-15490

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-15490/
Summaries are generated and may contain mistakes; the official description above is the record.