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CVE-2024-11667

Zyxel Multiple Firewalls Path Traversal

7.5 HIGHActively exploited (CISA KEV)Used in ransomwareEPSS 2.93%
  1. Published27 Nov 2024
  2. Added to CISA KEV3 Dec 2024
  3. Remediation due24 Dec 2024
Actively exploited (CISA KEV)

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.

Added to KEV: 3 Dec 2024Federal remediation due: 24 Dec 2024Used in ransomware

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Zyxel Zld≥ 5.00 ≤ 5.38 · ≥ 5.10 ≤ 5.38

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2024-11667 being actively exploited?

Yes. CVE-2024-11667 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Dec 2024. It has been used in ransomware campaigns.

How severe is CVE-2024-11667?

CVE-2024-11667 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 2.93% probability of exploitation.

Which products are affected by CVE-2024-11667?

Affected products include Zyxel Zld.

How do I fix CVE-2024-11667?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-11667 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.