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CVE-2025-9133

nvd nist
Published: Oct 21, 2025Modified: Jun 17, 2026

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8.1
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Exploitability: 2.8 / Impact: 5.2
Source: security@zyxel.com.tw (Secondary)

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.

Affected (3)

Products: Zyxel: Zld
Zyxel
1 product
Zld
Configuration A
1 vulnerable · 6 platform
Vulnerable SoftwareAffected Versions
Zld
From 4.32 to 5.41
Running on/withPlatform Versions
Zyxel
Atp100
All versions
Zyxel
Atp100w
All versions
Zyxel
Atp200
All versions
Zyxel
Atp500
All versions
Zyxel
Atp700
All versions
Zyxel
Atp800
All versions
Configuration B
1 vulnerable · 8 platform
Vulnerable SoftwareAffected Versions
Zld
From 4.50 to 5.41
Running on/withPlatform Versions
Zyxel
Usg Flex 100
All versions
Zyxel
Usg Flex 100ax
All versions
Zyxel
Usg Flex 100w
All versions
Zyxel
Usg Flex 200
All versions
Zyxel
Usg Flex 50
All versions
Zyxel
Usg Flex 500
All versions
Zyxel
Usg Flex 50ax
All versions
Zyxel
Usg Flex 700
All versions
Configuration C
1 vulnerable · 2 platform
Vulnerable SoftwareAffected Versions
Zld
From 4.16 to 5.41
Running on/withPlatform Versions
Zyxel
Usg 20w Vpn
All versions
Zyxel
Usg Flex 50w
All versions

Related CWEs

CWE-862
Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (1)

Source: security@zyxel.com.tw
Vendor Advisory

Timeline

No history available yet.