CVE-2025-9133

Published Oct 21, 2025 CVSS 3.1 · 8.1 High EPSS 5.8% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Zyxel atp100
Zyxel atp100w
Zyxel atp200
Zyxel atp500
Zyxel atp700
Zyxel atp800
Zyxel usg 20w-vpn
Zyxel usg Flex 100
Zyxel usg Flex 100ax
Zyxel usg Flex 100w
Zyxel usg Flex 200
Zyxel usg Flex 50
Zyxel usg Flex 500
Zyxel usg Flex 50ax
Zyxel usg Flex 50w
Zyxel usg Flex 700
Zyxel zld
CPEs cpe:2.3:h:zyxel:atp100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp100w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp200:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp500:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp700:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp800:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_20w-vpn:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100ax:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50ax:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:*
Vendors & Products Zyxel atp100
Zyxel atp100w
Zyxel atp200
Zyxel atp500
Zyxel atp700
Zyxel atp800
Zyxel usg 20w-vpn
Zyxel usg Flex 100
Zyxel usg Flex 100ax
Zyxel usg Flex 100w
Zyxel usg Flex 200
Zyxel usg Flex 50
Zyxel usg Flex 500
Zyxel usg Flex 50ax
Zyxel usg Flex 50w
Zyxel usg Flex 700
Zyxel zld
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Zyxel
Zyxel atp Series Firmware
Zyxel usg20(w)-vpn Series Firmware
Zyxel usg Flex 50(w) Series Firmware
Zyxel usg Flex Series Firmware
Vendors & Products Zyxel
Zyxel atp Series Firmware
Zyxel usg20(w)-vpn Series Firmware
Zyxel usg Flex 50(w) Series Firmware
Zyxel usg Flex Series Firmware
Type Values Removed Values Added
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.
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}