CVE-2025-9133

moderate-risk
Published 2025-10-21

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.

Do I need to act?

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0.06% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.1/10 High
NETWORK / LOW complexity

Affected Products (1)

Zld

Affected Vendors

Zyxel

References (1)

Vendor Advisory https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis...
33
/ 100
moderate-risk
Severity 28/34 · Critical
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal