Main Vulnerability Database Vulnerabilities #VU117407

Missing Authorization in ZyXEL Communications Corp. products - CVE-2025-9133

Published: October 21, 2025

Vulnerability identifier: #VU117407

CSH Severity: Medium

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-9133

CWE-ID: CWE-862

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to missing authorization. A remote user can view and download the system configuration from the target device.

ATP series
USG FLEX series
USG FLEX 50W
USG20W-VPN

Install updates from vendor's website.

ATP series - update to 5.41
USG FLEX series - update to 5.41
USG FLEX 50W - update to 5.41
USG20W-VPN - update to 5.41