CVE-2026-35019

High

Description

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.

SeverityHigh

CVSS8.1

Exploit probability—

ProductNF20MESH

PublishedJun 23, 2026

First seenJun 23, 2026

Weakness typeCWE-321CWE-321

How to fix

Update

NetComm Wireless Pty Ltd NF20MESHR6B032 or later

Patches

support.netcommwireless.com/api/Media/Firmware/4407c21d-e990-49a4-9754-b72475f20c76?Product=NF20MESH%20Release%20Notes.pdf

Affected products

Product	Affected versions	Fixed in
NetComm Wireless Pty Ltd NF20MESH	v < R6B032	R6B032

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