CVE-2025-11730
Published: Feb 5, 2026
Modified: Feb 26, 2026
CVSS v3.1
7.2
Description
A post‑authentication command injection vulnerability in the Dynamic DNS (DDNS) configuration CLI command in Zyxel ATP series firmware versions from V5.35 through V5.41, USG FLEX series firmware versions from V5.35 through V5.41, USG FLEX 50(W) series firmware versions from V5.35 through V5.41, and USG20(W)-VPN series firmware versions from V5.35 through V5.41 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on an affected device by supplying a specially crafted string as an argument to the CLI command.
| Vendor | Product | Versions |
|---|---|---|
Zyxel | ATP series firmware | affected versions from V5.35 through V5.41 |
Zyxel | USG FLEX series firmware | affected versions from V5.35 through V5.41 |
Zyxel | USG FLEX 50(W) series firmware | affected versions from V5.35 through V5.41 |
Zyxel | USG20(W)-VPN series firmware | affected versions from V5.35 through V5.41 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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