CVE-2023-39807: Nvki Intelligent Broadband Subscriber Gateway

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain a SQL injection vulnerability via the a_passwd parameter at /portal/user-register.php.

Affected products

• Nvki Intelligent Broadband Subscriber Gateway: version 3.5 only

Published 2023-08-21. Last modified 2026-07-09.