CVE-2026-35019: Netcomm Wireless Pty Ltd NF20MESH

High severity, CVSS 8.1. EPSS: 0.8% chance of exploitation in the next 30 days.

NetComm NF20MESH routers running firmware R6B031 and earlier contain an authentication bypass vulnerability that allows unauthenticated attackers to gain administrative access by exploiting a hardcoded AES-256 key used to encrypt session cookies for the web management interface. Attackers can forge a valid encrypted session cookie using the shared hardcoded key and bypass authentication checks to obtain full administrative control of the management interface while any legitimate administrator session is active.

Affected products

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