Zyxel Multiple Firewalls Path Traversal Vulnerability
Zyxel — ATP series firmware
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.
7.5
3.0%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published
- Nov 27, 2024
- Modified
- Oct 21, 2025
- Added to KEV
- Dec 3, 2024
- Federal patch due
- Dec 24, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2024-11667, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2024-11667 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2024-11667?
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.
How severe is CVE-2024-11667?
CVE-2024-11667 has a CVSS base score of 7.5 out of 10 (CVSS 3.1).
Is CVE-2024-11667 actively exploited in the wild?
Yes. CVE-2024-11667 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Dec 3, 2024, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.
What is the EPSS score for CVE-2024-11667?
3.0% - meaning FIRST.org's EPSS model estimates a 3.0% probability this vulnerability will be exploited in the wild within 30 days (86% percentile among all scored CVEs).
What type of vulnerability is CVE-2024-11667?
CVE-2024-11667 is classified under CWE-22 (CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')).
Cross-checked against
Impactr finds and proves whether CVE-2024-11667 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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