PT-2026-51522 · Netcomm Wireless Pty · Nf20Mesh

Brendan Scarvell · Published 2026-06-23 · Updated 2026-06-23 · CVE-2026-35018

Mitre

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-35018

Affected Products

Nf20Mesh

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-35018 · Security Note
• https://support.netcommwireless.com/api/Media/Firmware/4407c21d-e990-49a4-9754-b72475f20c76?Product=NF20MESH%20Release%20Notes.pdf · Patch
• https://signal11.io/advisories/netcomm-nf20-mesh-remote-code-execution · Note
• https://vulncheck.com/advisories/netcomm-nf20mesh-r6b032-authenticated-rce-via-os-command-injection · Note
• https://support.netcommwireless.com/products/nf20mesh#Firmware · Note