CVE-2026-35018

High

Description

NetComm NF20MESH routers running firmware R6B031 and earlier contain an authenticated remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the username JSON parameter processed by the dalStorage_addUserAccount function. Attackers can exploit the unsafe concatenation of user-supplied input into a shell command string passed to rut_doSystemAction without sanitization to achieve full root-level command execution on the underlying operating system.

SeverityHigh

CVSS8.8

Exploit probability—

ProductNF20MESH

PublishedJun 23, 2026

First seenJun 23, 2026

Weakness typeCWE-78OS command injection

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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