CVE-2026-35018

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Los routers NetComm NF20MESH que ejecutan el firmware R6B031 y versiones anteriores contienen una vulnerabilidad de ejecución remota de código autenticada que permite a atacantes autenticados ejecutar comandos arbitrarios como root inyectando metacaracteres de shell en el parámetro JSON de nombre de usuario procesado por la función dalStorage_addUserAccount. Los atacantes pueden explotar la concatenación insegura de entrada proporcionada por el usuario en una cadena de comando de shell pasada a rut_doSystemAction sin sanitización para lograr la ejecución completa de comandos a nivel de root en el sistema operativo subyacente.

Information

Published : 2026-06-23 15:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-35018

Mitre link : CVE-2026-35018

CVE.ORG link : CVE-2026-35018

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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