Vulnerability · Published Jun 23, 2026 · Assigned by VulnCheck

CVE-2026-35018NetComm NF20MESH < R6B032 Authenticated RCE via OS Command Injection

High 8.8

In plain English

A high-severity OS command injection in NF20MESH from NetComm Wireless Pty Ltd. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.3%top 30.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
NetComm Wireless Pty Ltd	NF20MESH	0 – before R6B032

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://signal11.io/advisories/netcomm-nf20-mesh-remote-code-execution technical-description
https://support.netcommwireless.com/api/Media/Firmware/4407c21d-e990-49a4-9754-b72475f20c76?Product=NF20MESH%20Release%20Notes.pdf release-notes, patch
https://support.netcommwireless.com/products/nf20mesh#Firmware product
https://www.vulncheck.com/advisories/netcomm-nf20mesh-r6b032-authenticated-rce-via-os-command-injection third-party-advisory