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01 Record

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)

HighKEVPUBLISHEDCNA: Zyxel
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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02 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)

03 Exploitation and scoring

Exploitation
Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2024-12-03. Federal remediation due 2024-12-24. Known ransomware campaign use: reported by CISA.
SSVC decision
  • ExploitationactiveCISA reports credible evidence of active exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.92% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 86.6% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-08-05.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-11-27 09:39Z1 YR AGO
Last updated
2026-08-05 03:55Z2 MO AGO
Reserved
2024-11-25
Assigning CNA
Zyxel
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
Data version
5.2
Document digest
7d3fe50f44ebf04f489ace4051727ad76c79e8fe6cf3ec6f9337c02562d958d5

05 Affected products

VendorProductVersionsPlatforms
ZyxelATP series firmwareversions V5.00 through V5.38—
ZyxelUSG FLEX series firmwareversions V5.00 through V5.38—
ZyxelUSG FLEX 50(W) series firmwareversions V5.10 through V5.38—
ZyxelUSG20(W)-VPN series firmwareversions V5.10 through V5.38—
zyxelusg_flex_firmware5.00 to 5.38—
zyxelatp_firmware5.00 to 5.38—
zyxelusg20-vpn_firmware5.10 to 5.38—
zyxelusg_flex_50w_firmware5.10 to < 5.38—

06 References