# CVE-2024-39786: Path traversal in Wavlink AC3000

> An authenticated attacker can exploit directory traversal in the nas.cgi add_dir() function to bypass permissions and modify files on the Wavlink AC3000 router.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Jan 2025
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-8qrq-rh6g-rh3h

## What is CVE-2024-39786?

CVE-2024-39786 is a critical path traversal vulnerability in Wavlink Wl-Wn533a8 Firmware, published on 14 Jan 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Multiple directory traversal vulnerabilities exist in the nas.cgi add_dir() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A directory traversal vulnerability exists within the `adddir_name` POST parameter.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2024-39786?

It affects 1 product.


Products: Wavlink Wl-Wn533a8 Firmware.

## How do I fix CVE-2024-39786?

No fix has been published for CVE-2024-39786 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-39786 being exploited?

There is no known exploitation of CVE-2024-39786 in the wild and no public exploit code.

## Other vulnerabilities in Wavlink Wl-Wn533a8 Firmware

- [CVE-2024-34166](https://insights.sbomify.com/CVE-2024-34166/): Command injection in Wavlink AC3000 (critical 10.0)
- [CVE-2024-36258](https://insights.sbomify.com/CVE-2024-36258/): Memory corruption in Wavlink AC3000 (critical 10.0)
- [CVE-2024-36290](https://insights.sbomify.com/CVE-2024-36290/): Memory corruption in Wavlink AC3000 (critical 10.0)
- [CVE-2024-39608](https://insights.sbomify.com/CVE-2024-39608/): Missing authorization in Wavlink AC3000 (critical 10.0)
- [CVE-2024-39754](https://insights.sbomify.com/CVE-2024-39754/): Auth bypass in Wavlink AC3000 (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-39786 and fix it if it is affected.

What it is: CVE-2024-39786 is a critical path traversal vulnerability in Wavlink Wl-Wn533a8 Firmware, published on 14 Jan 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-39786 in the wild and no public exploit code.

Affected product: Wavlink Wl-Wn533a8 Firmware. 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-2024-39786/ (Markdown: https://insights.sbomify.com/CVE-2024-39786/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-39786
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-39786
- OSV: https://osv.dev/vulnerability/CVE-2024-39786

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-39786/
Summaries are generated and may contain mistakes; the official description above is the record.