What is CVE-2024-11667?

CVE-2024-11667 is a high-severity vulnerability in Zyxel Atp Series Firmware, classified under Path Traversal. CVSS score: 7.5/10. Published 2024-11-27.

How severe is CVE-2024-11667?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2024-11667 known to be exploited?

Yes. CVE-2024-11667 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-03), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.

Path Traversal in Zyxel Atp Series Firmware

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…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.289 (96.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Zyxel Atp Series Firmware — versions versions V5.00 through V5.38
Zyxel Usg20(w)-vpn Series Firmware — versions versions V5.10 through V5.38
Zyxel Usg Flex 50(w) Series Firmware — versions versions V5.10 through V5.38
Zyxel Usg Flex Series Firmware — versions versions V5.00 through V5.38

Weakness classification (CWE)

CWE-22 — Path Traversal

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-12-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2024-12-24.

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

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-pro… (vendor-advisory)

Frequently asked questions

What is CVE-2024-11667?: CVE-2024-11667 is a high-severity vulnerability in Zyxel Atp Series Firmware, classified under Path Traversal. CVSS score: 7.5/10. Published 2024-11-27.
How severe is CVE-2024-11667?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-11667 known to be exploited?: Yes. CVE-2024-11667 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-03), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.