CVE-2026-14818

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-14818
StatePUBLISHED
AssignerZyxel
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-04 04:16:30 UTC
Updated2026-08-04 04:16:30 UTC
DescriptionA path traversal vulnerability in the CLI command used to execute configuration files in Zyxel ATP series firmware versions from V4.32 through V5.42 Patch 1, USG FLEX series firmware versions from V4.50 through V5.42 Patch 1, USG FLEX 50(W) series firmware versions from V4.16 through V5.42 Patch 1, and USG20(W)-VPN series firmware versions from V4.16 through V5.42 Patch 1 could allow an authenticated attacker with administrator privileges to execute a crafted malicious configuration file on an affected device.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

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

Problem Types: CWE-22 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zyxel ATP Series Firmware affected from V4.32 through V5.42 Patch 1 Not specified
CNA Zyxel USG FLEX Series Firmware affected from V4.50 through V5.42 Patch 1 Not specified
CNA Zyxel USG FLEX 50W Series Firmware affected from V4.16 through V5.42 Patch 1 Not specified
CNA Zyxel USG20W-VPN Series Firmware affected from V4.16 through V5.42 Patch 1 Not specified

References

ReferenceSourceLinkTags
www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory... [email protected] www.zyxel.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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