CVE-2026-14818

HighCVSS 7.2/10Last modified Aug 4, 2026

Description

A 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.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-22

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
ZyxelATP series firmwarefrom V4.32 through V5.42 Patch 1
ZyxelUSG FLEX series firmwarefrom V4.50 through V5.42 Patch 1
ZyxelUSG FLEX 50(W) series firmwarefrom V4.16 through V5.42 Patch 1
ZyxelUSG20(W)-VPN series firmwarefrom V4.16 through V5.42 Patch 1

References

Timeline

Published
Aug 4, 2026
Last modified
Aug 4, 2026
NVD status
Awaiting Analysis

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CVE-2026-14818: High severity, CVSS 7.2 | Vulnix