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Findings

CVE-2024-11667

Zyxel Multiple Firewalls Path Traversal Vulnerability

Published Nov 27, 2024 · updated Aug 4, 2026 · zyxel zld

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.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 27, 2024 · Catalog

    Detected

    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.

  2. Dec 3, 2024 · CISA KEV

    Known exploited

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

  3. Dec 24, 2024 · CISA KEV

    Remediation due

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

  4. Aug 4, 2026 · Catalog

    Updated

    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.

Required action

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

CISA due date Dec 24, 2024

Affected

  • cpe zyxel/zldversion unspecified
  • vendor Zyxel Multiple Firewallsversion unspecified

Sources

  • CISA KEVCVE-2024-11667

    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.

    cisa.gov
  • CVE.orgCVE-2024-11667

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2024-11667

    30-day exploitation probability 2.9%

    first.org
  • NIST NVDCVE-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 V5.38, and USG20(W)-VPN series firmware vers

    nvd.nist.gov

References