CVE WatchAug 5, 2026

CVE-2024-11667

Zyxel Multiple Firewalls Path Traversal Vulnerability

CVSS

7.5

High

EPSS

2.9%

p87

KEV

YES

Dec 3, 2024

Exploit Today

0-100

Published: Nov 27, 2024 · Last modified: Aug 5, 2026 · CWE-22

EPSS · 30d

2.9%EPSS · 30 days2.9%

2026-09-162026-10-14

KEV catalog record

Product

Zyxel / Multiple Firewalls

Vulnerability

Zyxel Multiple Firewalls Path Traversal Vulnerability

Added to KEV

Dec 3, 2024

Remediate by

Dec 24, 2024

Known ransomware use

Yes

Summary description

Multiple Zyxel firewalls contain a path traversal vulnerability in the web management interface that could allow an attacker to download or upload files via a crafted URL.

Required action

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

Notes

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-21-2024 ; https://nvd.nist.gov/vuln/detail/CVE-2024-11667

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-41544—

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———A path traversal vulnerability has been reported to affect QcalAgent. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: QcalAgent 1.1.10 and later6h CVE-2026-24718—

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———A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.7 and later Qsync Central 5.1.0.3 and later Qsync Central 5.2.0.5 and later Qsync Central 5.3.0.2 and later6h CVE-2025-66275—

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———A path traversal vulnerability has been reported to affect Video Station. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: Video Station 5.8.5 and later6h CVE-2025-66272—

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———A flaw was found in OpenSSH. During an sftp copy, a malicious server can supply an empty name, a slash-only path, or a ".." basename that sftp uses as the local destination, writing outside the directory the user selected.7h CVE-2026-626645.4 MED

—

——0FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.19.0, FileRise validates the complete folderName string but does not reject dot-dot path segments before FolderModel::createFolder() constructs and creates the destination. An authenticated low-privileged user with a valid CSRF token and create or owner permission on the parent can submit traversal segments to POST /api/folder/createFolder.php and create directories outside UPLOAD_DIR wherever the web-server account can write. This issue is fixed in version 3.19.0.16h