CVE-2026-0410: Router Privilege Escalation Vulnerability

CVE-2026-0410 Overview

CVE-2026-0410 is an improper input validation flaw [CWE-20] affecting multiple NETGEAR router models. Authenticated administrators connected to the local network can gain elevated access to the router and make unauthorized changes to router software and functionality. The vulnerability requires high attacker privileges and adjacent network access, limiting practical exploitation to attackers already inside the trusted network perimeter. NETGEAR disclosed the flaw in its June 2026 Security Advisory, which covers a broad range of WiFi 6 and WiFi 6E consumer and prosumer router platforms including the R7000, RAX, and Nighthawk Pro Gaming lines.

Critical Impact
Authenticated attackers on the local network can modify router software and configuration, undermining device integrity and enabling persistent unauthorized changes to network infrastructure.

Affected Products

NETGEAR R7000, RAX20, RAX35v2, RAX41, RAX41v2, RAX42, RAX42v2 routers
NETGEAR RAX43, RAX43v2, RAX45, RAX49s, RAX50, RAX50s, RAX50v2, RAX54sv2 routers
NETGEAR RAXE450, RAXE500, XR1000, XR1000v2 routers

Discovery Timeline

2026-06-09 - CVE-2026-0410 published to NVD
2026-06-10 - Last updated in NVD database

Technical Details for CVE-2026-0410

Vulnerability Analysis

The vulnerability is classified as Improper Input Validation [CWE-20]. NETGEAR's administrative interface fails to sufficiently validate input from authenticated administrator sessions originating on the local network. As a result, an administrator with valid credentials can exceed the intended boundaries of the administrative role and alter router software or core functionality beyond the documented management surface.

The flaw impacts integrity rather than confidentiality or availability. An attacker holding administrator credentials does not gain network exfiltration capability through this issue alone, but can persistently change router behavior. Because the vector is adjacent network (AV:A), exploitation cannot occur over the public internet without prior pivot into the LAN or WiFi segment.

Root Cause

The root cause is missing or insufficient validation of administrative input on the management interface. The router accepts requests from authenticated administrators that should be constrained by role boundaries but instead permit unauthorized modification of software and functionality. CWE-20 typically reflects gaps in parameter validation, command sanitization, or state checks between privileged operations.

Attack Vector

Exploitation requires three conditions to be met simultaneously. The attacker must be on the adjacent network, such as a wired LAN port, a guest WLAN that has been bridged, or the primary WiFi network. The attacker must hold valid administrator credentials, obtained through credential reuse, phishing, default-credential abuse, or prior compromise. The attacker must then issue crafted requests through the administrative interface to trigger the input validation gap. NETGEAR has not published proof-of-concept code, and no public exploit is currently available.

The vulnerability mechanism is described in the NETGEAR Security Advisory June 2026.

Detection Methods for CVE-2026-0410

Indicators of Compromise

Unexpected firmware version strings or configuration drift on affected NETGEAR router models
Administrative logins from unfamiliar LAN or WLAN clients, especially outside business hours
Unauthorized changes to DNS settings, port forwards, VPN configuration, or remote management state
New or modified administrator accounts on the router management interface

Detection Strategies

Baseline router configuration and firmware versions, then alert on any deviation through periodic SNMP or HTTPS polling
Correlate administrative session logs from the router with endpoint authentication events to identify lateral movement into the management plane
Monitor LAN segments for ARP anomalies and rogue clients that could host an attacker with adjacent network access

Monitoring Recommendations

Forward router syslog to a centralized logging or SIEM platform and retain administrative events for at least 90 days
Track NETGEAR firmware advisories and validate that deployed builds match the latest fixed versions from the June 2026 advisory
Alert on configuration export, factory reset, and firmware upload events originating from the LAN

How to Mitigate CVE-2026-0410

Immediate Actions Required

Apply the firmware updates referenced in the NETGEAR Security Advisory June 2026 for each affected model
Rotate router administrator credentials and enforce unique, high-entropy passwords distinct from any other account
Disable remote management and restrict the administrative interface to a dedicated management VLAN where feasible

Patch Information

NETGEAR has released firmware updates for the affected models as part of the June 2026 Security Advisory. Administrators should download the appropriate firmware from each model's official support page, such as the NETGEAR R7000 Support Page or the corresponding RAX, RAXE, and XR1000 support pages, and apply it through the router's management interface. Verify the post-update firmware version against the version listed in the advisory before considering the device remediated.

Workarounds

Limit WiFi and LAN access to trusted devices only, reducing the population of clients on the adjacent network
Place the router management interface behind a network access control list that allows only specific administrative workstations
Disable any guest networks that are bridged to the primary LAN until firmware is updated

bash

# Configuration example - restrict administrative access to a single management host
# Apply via the router's Access Control or Administration menu
Allowed-Admin-Source-IP: 192.0.2.10
Remote-Management: Disabled
Admin-Interface-HTTPS-Only: Enabled