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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.

PUBLISHED Reserved 2025-08-19 | Published 2025-10-21 | Updated 2025-10-22 | Assigner Zyxel




HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

versions from V4.32 through V5.40
affected

Default status
unaffected

versions from V4.50 through V5.40
affected

Default status
unaffected

versions from V4.16 through V5.40
affected

Default status
unaffected

versions from V4.16 through V5.40
affected

References

www.zyxel.com/...vulnerabilities-in-zld-firewalls-10-21-2025 vendor-advisory

cve.org (CVE-2025-9133)

nvd.nist.gov (CVE-2025-9133)

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