8.1
/ 10
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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.
Basic Information
ID
CVE-2025-9133
Source
Zyxel
Published
Oct 21, 2025 at 01:57
Affected Product
Vendor
Zyxel
Product
ATP series firmware
Version
versions from V4.32 through V5.40
Affected Versions
Zyxel ATP series firmware versions from V4.32 through V5.40
Zyxel USG FLEX series firmware versions from V4.50 through V5.40
Zyxel USG FLEX 50(W) series firmware versions from V4.16 through V5.40
Zyxel USG20(W)-VPN series firmware versions from V4.16 through V5.40
Zyxel USG FLEX series firmware versions from V4.50 through V5.40
Zyxel USG FLEX 50(W) series firmware versions from V4.16 through V5.40
Zyxel USG20(W)-VPN series firmware versions from V4.16 through V5.40