CVE-2025-9133: A missing authorization vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series…
CVE-2025-9133 · Severity: high · CVSS 8.1 · 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.
No. Junglewise Threat Intelligence has no report of CVE-2025-9133 being exploited in the wild.
How severe is CVE-2025-9133?
High severity, with a CVSS score of 8.1, published 21 October 2025.
Which products and versions are affected?
Zyxel Atp100, Zyxel Atp100w, Zyxel Atp200, Zyxel Atp500 and 13 more. The advisory does not name versions.
Is there a fix for CVE-2025-9133?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-9133?
Check whether you run Zyxel Atp100, Zyxel Atp100w, Zyxel Atp200 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.