CVE-2024-11667

Name: CVE-2024-11667
Creator: NVD / NIST
Published: 2024-11-27T10:15:04.21+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 3.02%

Last modified Jun 17, 2026

CVE-2024-11667 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 3.02% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.02%

85.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Dec 24, 2024.

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Zyxel	Zld	>= 5.00, <= 5.38
Zyxel	Zld	>= 5.10, <= 5.38

References

Timeline

Published: Nov 27, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-11667?

How severe is CVE-2024-11667?

CVE-2024-11667 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.02% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2024-11667?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-11667?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST