CVE-2026-31849: Nexxtsolutions NEBULA300PLUS Firmware

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator’s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings.

Affected products

• Nexxtsolutions NEBULA300PLUS Firmware: up to and including 12.01.01.37

Published 2026-03-23. Last modified 2026-06-17.