CVE-2025-9133
Published: Oct 21, 2025
Modified: Feb 26, 2026
CVSS v3.1
8.1
Description
A missing authorization vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.40, USG FLEX 50(W) series firmware versions from V4.16 through V5.40, and USG20(W)-VPN series firmware versions from V4.16 through V5.40 could allow a semi-authenticated attacker—who has completed only the first stage of the two-factor authentication (2FA) process—to view and download the system configuration from an affected device.
| Vendor | Product | Versions |
|---|---|---|
Zyxel | ATP series firmware | affected versions from V4.32 through V5.40 |
Zyxel | USG FLEX series firmware | affected versions from V4.50 through V5.40 |
Zyxel | USG FLEX 50(W) series firmware | affected versions from V4.16 through V5.40 |
Zyxel | USG20(W)-VPN series firmware | affected versions from V4.16 through V5.40 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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