CVE-2025-9133 — Zyxel / ATP series firmware

Description (CNA)

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 (CNA)

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

CWE

CWE-862

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-and-missing-authorization-vulnerabilities-in-zld-firewalls-10-21-2025

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.