CVE-2026-0419 Overview
CVE-2026-0419 is a command injection vulnerability in the NETGEAR JR6150 AC750 WiFi Router. The flaw stems from insufficient input validation in the device firmware. Authenticated users connected to the local WiFi network can execute arbitrary operating system commands on the router.
The JR6150 was released in 2014 and reached End-of-Support status in 2018. NETGEAR will not release a security patch and recommends device replacement. The vulnerability was identified through firmware emulation in a controlled research environment and has not been verified on production hardware.
Critical Impact
Local attackers with WiFi network access and low-privilege credentials can execute operating system commands on the router, gaining control over network traffic routing and connected client devices.
Affected Products
- NETGEAR JR6150 AC750 WiFi Router 802.11ac Dual Band Gigabit (2014 release)
- All firmware versions (device reached End-of-Support in 2018)
- No supported firmware available for remediation
Discovery Timeline
- 2026-06-09 - CVE-2026-0419 published to NVD
- 2026-06-10 - Last updated in NVD database
Technical Details for CVE-2026-0419
Vulnerability Analysis
The vulnerability is classified as Improper Input Validation [CWE-20] leading to command injection. The router firmware accepts user-supplied input through one or more administrative interfaces without performing adequate sanitization. Attackers can embed shell metacharacters or command separators in input fields. The router process then passes these unvalidated values to operating system shell calls, resulting in arbitrary command execution.
The attack requires local network adjacency and low-privilege authentication. Successful exploitation grants attackers the ability to run commands with the privileges of the affected service, typically root on consumer routers. This enables persistent firmware modification, traffic interception, and pivoting to internal network resources.
Root Cause
The root cause is missing or insufficient input validation routines in the router web management or configuration interface. User-controlled parameters reach OS command execution paths without filtering for shell metacharacters such as ;, |, &, and backticks. NETGEAR has confirmed the device is past End-of-Support and will not receive code-level fixes.
Attack Vector
The attack vector is local. An attacker must first connect to the router's WiFi network and possess valid low-privilege credentials. The attacker then submits crafted input to a vulnerable parameter in the management interface. The injected commands execute in the context of the router's underlying Linux-based operating system. Refer to the NETGEAR Security Advisory June 2026 for vendor details.
Detection Methods for CVE-2026-0419
Indicators of Compromise
- Unexpected outbound network connections originating from the router's WAN interface to unknown hosts
- Unauthorized configuration changes including DNS server, firmware images, or administrative credentials
- New or modified processes running on the router that do not match factory firmware baselines
- Anomalous DHCP or DNS responses provided to LAN clients suggesting traffic manipulation
Detection Strategies
- Monitor router administrative interface logs for input strings containing shell metacharacters such as ;, |, &&, and $()
- Compare router configuration snapshots against known-good baselines to identify unauthorized modifications
- Inspect network traffic patterns from endpoints behind the router for signs of DNS hijacking or TLS interception
Monitoring Recommendations
- Deploy network detection capabilities upstream of consumer routers to identify command-and-control or data exfiltration patterns
- Log authentication events at the router and alert on multiple failed logins followed by configuration changes
- Track firmware version and configuration drift on all network infrastructure devices that remain in production
How to Mitigate CVE-2026-0419
Immediate Actions Required
- Replace the NETGEAR JR6150 with a currently supported router model, as recommended by the vendor
- Disconnect the device from production networks if replacement is not immediately possible
- Change all administrative credentials on the JR6150 and restrict WiFi access using WPA2 or WPA3 with a strong passphrase
- Disable remote management features and isolate the device on a segmented network
Patch Information
No patch is available. The NETGEAR JR6150 reached End-of-Support in 2018, and the vendor has stated no further security updates are planned. NETGEAR recommends replacing affected devices with newer supported models. See the NETGEAR JR6150 product support page for end-of-life information.
Workarounds
- Restrict WiFi access to trusted users only and rotate the wireless passphrase
- Place the router behind a more capable security gateway and disable its routing functions where possible
- Enforce strong, unique administrative credentials and disable any guest or low-privilege accounts
- Monitor LAN-side traffic for indicators of router compromise until the device is replaced
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
