CVE-2026-35018 | NetComm NF20MESH routers running firmware R6B031 and earlier… | CVSS 8.8 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.

Metadata

CVE ID: CVE-2026-35018
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-03-31 20:40 UTC
Published: 2026-06-23 13:46 UTC
Last updated: 2026-06-23 13:46 UTC
Primary CWE: CWE-78
Improper Neutralization of Special Elements used in an OS Co…
Vendor / Product: NetComm Wireless Pty Ltd / NF20MESH
Sources: cve.org · NVD

Severity & Metrics

8.8 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products (1)

Vendor	Product	Platform	Versions
NetComm Wireless Pty Ltd	NF20MESH	—	0 < R6B032

Weakness (CWE)

CWE	Source	Description
CWE-78	cna	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.8	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (4)