SARA / Free Tools / CVE / CVE-2024-11667

CVE-2024-11667 — Zyxel Multiple Firewalls Path Traversal Vulnerability

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 vers

CVSS

7.5 HIGH

EPSS

34.19% (top 3.10%)

CWE

CWE-22

Published

2024-11-27T09:39:41.691Z

Last modified

2025-10-21T22:55:34.999Z

CVSS vector

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

CISA KEV — Actively Exploited

Added to KEV

2024-12-03

BOD 22-01 due

2024-12-24

Ransomware use

Known

View KEV detail

CVE-2024-11667 on CISA KEV →

01What is this vulnerability?

02Affected products

Vendor	Product	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

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2024-12-03. Ransomware use: Known.

04Recommended remediation

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

Published: 2024-11-27T09:39:41.691Z
Last modified: 2025-10-21T22:55:34.999Z
Added to CISA KEV: 2024-12-03
BOD 22-01 due: 2024-12-24

09References

www.zyxel.com — https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis…

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