CVE-2026-31846: Nexxt Solutions Nebula 300+ / Tenda f3 v2.0 Firmware

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Missing authentication in the /goform/ate endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows an adjacent unauthenticated attacker to retrieve sensitive device information, including the administrator password. An attacker can decode this value to obtain valid administrative credentials and authenticate to the device.

Affected products

• Nexxt Solutions Nebula 300+ / Tenda f3 v2.0 Firmware: up to and including 12.01.01.37

Published 2026-03-23. Last modified 2026-08-10.