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

> CVE-2024-11667: Zyxel Multiple Firewalls Path Traversal Vulnerability. CVSS 7.5 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2024-11667
Last updated: 2026-08-05T05:16:40Z

- Published: 2024-11-27 09:39 UTC · Updated: 2026-08-05 05:16 UTC · Assigner: Zyxel
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS: 2.9%, 87th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2024-12-03, federal due date 2024-12-24, ransomware use: Known
- CWE: CWE-22

## 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.

## CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- zyxel: atp\_firmware
- zyxel: usg20-vpn\_firmware
- zyxel: usg\_flex\_50w\_firmware
- zyxel: usg\_flex\_firmware
- Zyxel: ATP series firmware
- Zyxel: USG20(W)-VPN series firmware
- Zyxel: USG FLEX 50(W) series firmware
- Zyxel: USG FLEX series firmware

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2024-11667)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2024-11667)
- [https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-27-2024](https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-27-2024)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2024-11667 · Markdown: https://rewindex.com/cve/CVE-2024-11667.md · JSON: https://rewindex.com/api/v1/cves/CVE-2024-11667 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:43.749Z