CVE-2026-35018: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in NetComm Wireless Pty Ltd NF20MESH
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.
AI Analysis
Technical Summary
CVE-2026-35018 describes an authenticated remote code execution vulnerability in NetComm Wireless NF20MESH routers running firmware R6B031 and earlier. The vulnerability arises from improper neutralization of special elements in the username JSON parameter processed by the dalStorage_addUserAccount function. User input is unsafely concatenated into a shell command string passed to rut_doSystemAction without sanitization, enabling attackers with authentication to execute arbitrary OS commands as root.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary commands with root privileges on the affected device. This can lead to full system compromise, including control over the router's operating system and potentially the network it manages.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the router's management interface to trusted users only and monitor for suspicious activity. Avoid exposing the management interface to untrusted networks.
CVE-2026-35018: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in NetComm Wireless Pty Ltd NF20MESH
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.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-35018 describes an authenticated remote code execution vulnerability in NetComm Wireless NF20MESH routers running firmware R6B031 and earlier. The vulnerability arises from improper neutralization of special elements in the username JSON parameter processed by the dalStorage_addUserAccount function. User input is unsafely concatenated into a shell command string passed to rut_doSystemAction without sanitization, enabling attackers with authentication to execute arbitrary OS commands as root.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary commands with root privileges on the affected device. This can lead to full system compromise, including control over the router's operating system and potentially the network it manages.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the router's management interface to trusted users only and monitor for suspicious activity. Avoid exposing the management interface to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-03-31T20:40:15.618Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3a9a97eed863c81e22c5dd
Added to database: 06/23/2026, 14:39:19 UTC
Last enriched: 07/15/2026, 10:25:52 UTC
Last updated: 08/05/2026, 12:41:14 UTC
Views: 55
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