# CVE-2024-11667: Zyxel Multiple Firewalls Path Traversal

> Attackers can download or upload files via crafted URLs in the web management interface of Zyxel ATP and USG FLEX firewalls.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Yes, since 3 Dec 2024 (CISA KEV), used in ransomware
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Nov 2024
- **Updated:** 5 Aug 2026
- **Also known as:** GHSA-h9fh-gm4r-6cxh

## What is CVE-2024-11667?

CVE-2024-11667 is a high-severity path traversal vulnerability in Zyxel ATP series firmware, published on 27 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware versions V5.10 through V5.38, and USG20(W)-VPN series firmware versions V5.10 through V5.38 could allow an attacker to download or upload files via a crafted URL.

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

## Which versions are affected by CVE-2024-11667?

It affects 1 product.


Products: Zyxel Zld.

## How do I fix CVE-2024-11667?

No fix has been published for CVE-2024-11667 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 24 Dec 2024.

## Is CVE-2024-11667 being exploited?

Yes. Attackers have exploited CVE-2024-11667 in the wild since at least 3 Dec 2024, including in ransomware campaigns.

## Other vulnerabilities in Zyxel ATP series firmware

- [CVE-2025-9133](https://insights.sbomify.com/CVE-2025-9133/): Missing authorization in ATP series firmware (high 8.1)
- [CVE-2024-42057](https://insights.sbomify.com/CVE-2024-42057/): Command injection in ATP series firmware (high 8.1)
- [CVE-2024-42058](https://insights.sbomify.com/CVE-2024-42058/): Null dereference in ATP series firmware (high 7.5)
- [CVE-2023-4398](https://insights.sbomify.com/CVE-2023-4398/): Integer overflow in ATP series firmware (high 7.5)
- [CVE-2025-8078](https://insights.sbomify.com/CVE-2025-8078/): Command injection in ATP series firmware (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-11667 and fix it if it is affected.

What it is: CVE-2024-11667 is a high-severity path traversal vulnerability in Zyxel ATP series firmware, published on 27 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2024-11667 in the wild since at least 3 Dec 2024, including in ransomware campaigns.

Affected product: Zyxel ATP series 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-2024-11667/ (Markdown: https://insights.sbomify.com/CVE-2024-11667/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-11667
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-11667
- OSV: https://osv.dev/vulnerability/CVE-2024-11667

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-11667/
Summaries are generated and may contain mistakes; the official description above is the record.