CVE-2026-35018 NetComm NF20MESH < R6B032 Authenticated RCE via OS Command Injection
Authenticated attackers can execute arbitrary root commands on NetComm NF20MESH routers via OS command injection in the user account management function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-35018?
CVE-2026-35018 is a high-severity command injection vulnerability in NetComm Wireless Pty Ltd NF20MESH, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-78
Which versions are affected by CVE-2026-35018?
How do I fix CVE-2026-35018?
No fix has been published for CVE-2026-35018 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-35018 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35018 exists.
Sources
Also known as GHSA-jqc2-w244-p56p.