Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | Zld | >= 4.32, < 5.41 |
| Zyxel | Atp100 | - |
| Zyxel | Atp100W | - |
| Zyxel | Atp200 | - |
| Zyxel | Atp500 | - |
| Zyxel | Atp700 | - |
| Zyxel | Atp800 | - |
| 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 700 | - |
| Zyxel | Usg 20W-Vpn | All versions |
| Zyxel | Usg Flex 50W | - |
Related Weaknesses (CWE)
References
FAQ
What is CVE-2025-9133?
CVE-2025-9133 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 version...
How severe is CVE-2025-9133?
CVE-2025-9133 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-9133?
Check the references section above for vendor advisories and patch information. Affected products include: Zyxel Zld, Zyxel Atp100, Zyxel Atp100W, Zyxel Atp200, Zyxel Atp500.