How severe is CVE-2024-11667?

CVE-2024-11667 has a CVSS 3.1 base score of 7.5 (HIGH). EPSS estimates a 2.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2024-11667: Zyxel Multiple Firewalls Path Traversal

CISA Known Exploited Vulnerabilities

Zyxel Multiple Firewalls Path Traversal Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2024-12-03

Remediation due

2024-12-24

Ransomware

Known use

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

CISA 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

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.

Severity

CVSS 3.1 · CNA7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
Zyxel	ATP series firmware	versions V5.00 through V5.38
Zyxel	USG FLEX series firmware	versions V5.00 through V5.38
Zyxel	USG FLEX 50(W) series firmware	versions V5.10 through V5.38
Zyxel	USG20(W)-VPN series firmware	versions V5.10 through V5.38

References

1 Links

Vendor advisories

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-27-2024

Record Details

Published

2024-11-27

Last updated

2026-08-05

Assigner (CNA)

Zyxel

Credited to

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Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-22 · Path Traversal

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.