CVE-2026-0411: NETGEAR Orbi Auth Bypass Vulnerability

CVE-2026-0411 Overview

CVE-2026-0411 is an information disclosure vulnerability affecting NETGEAR Orbi satellite devices in the RBR, RBE, and RBS series. The flaw allows a user already connected to the wireless network to obtain credentials or sensitive data that grant administrator access to the Orbi router. The issue is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor. Orbi WiFi Systems deployed without satellite devices are not affected. NETGEAR published the advisory and remediation guidance in June 2026.

Critical Impact
An attacker on the adjacent network can escalate from a standard wireless client to full administrative control of the Orbi router, exposing all routing, DNS, and traffic management functions.

Affected Products

NETGEAR Orbi RBR Series satellite-attached routers (including RBR350, RBR760)
NETGEAR Orbi RBE Series satellite-attached routers (including RBE970)
NETGEAR Orbi RBS Series satellites (including RBS350, RBS760)

Discovery Timeline

2026-06-09 - CVE-2026-0411 published to the National Vulnerability Database (NVD)
2026-06-11 - Last updated in NVD database

Technical Details for CVE-2026-0411

Vulnerability Analysis

The vulnerability resides in the satellite component of NETGEAR Orbi mesh deployments. A client connected to the network can query or interact with the satellite in a way that surfaces sensitive configuration or credential material belonging to the paired router. Once obtained, this information is sufficient to authenticate as administrator on the Orbi router itself. The flaw is exploitable only when at least one satellite device is paired with the router. Standalone Orbi router deployments without satellites are not impacted, which confirms the disclosure path traverses the router-to-satellite trust relationship.

Root Cause

The root cause is improper protection of sensitive information ([CWE-200]) on the Orbi satellite. The satellite stores or returns data that should remain confidential between the router and its mesh peers. Because the satellite exposes this material to network-connected clients, it breaks the assumption that administrator credentials are isolated from the LAN data plane.

Attack Vector

The attack vector is the adjacent network. The attacker must hold a valid connection to the Wi-Fi network served by the Orbi mesh, which implies low privileges such as a guest or standard user. No user interaction is required from an administrator. After retrieving the disclosed data, the attacker authenticates to the router's administrative interface and gains full management rights, including the ability to alter DNS, firewall, and firmware settings.

No public proof-of-concept exploit is available for CVE-2026-0411 at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Technical specifics are described in the NETGEAR Security Advisory June 2026.

Detection Methods for CVE-2026-0411

Indicators of Compromise

Unexpected administrative logins to the Orbi web interface from internal LAN or Wi-Fi client IP addresses
Configuration changes to DNS servers, firewall rules, port forwarding, or remote management settings that were not initiated by an administrator
Firmware downgrade events or unsigned firmware loads on RBR, RBE, or RBS series devices

Detection Strategies

Audit Orbi administrative session logs for authentications originating from standard client subnets rather than designated management hosts
Monitor mesh traffic between satellites and the router for anomalous queries that retrieve configuration blobs or credential material
Compare current router configuration snapshots against a known-good baseline on a recurring schedule to identify unauthorized drift

Monitoring Recommendations

Forward Orbi syslog output to a centralized logging platform and alert on administrative authentication events
Track DHCP and Wi-Fi association logs to correlate any administrative session with the specific client device that initiated it
Enable alerts on changes to DNS resolver configuration, since DNS hijacking is a common follow-on action after router compromise

How to Mitigate CVE-2026-0411

Immediate Actions Required

Apply the firmware update referenced in the NETGEAR Security Advisory June 2026 to all paired RBR, RBE, and RBS satellite devices
Rotate the Orbi administrator password and Wi-Fi pre-shared key after patching, in case credentials were previously disclosed
Restrict Wi-Fi access to trusted users and isolate untrusted devices on the guest network until patching is complete

Patch Information

NETGEAR has published fixed firmware versions for the affected Orbi models. Refer to the product-specific support pages for download links and installation instructions: RBE970, RBR350, RBR760, RBS350, and RBS760. Apply updates to both the router and every paired satellite, since the disclosure path runs through the satellite firmware.

Workarounds

Disable remote management and restrict the administrative interface to a dedicated management VLAN or wired port
Segment guest and IoT clients onto a separate SSID with client isolation enabled to reduce the population of users with adjacent-network access
Temporarily power off Orbi satellites in environments where immediate patching is not possible, since the vulnerability does not impact router-only deployments

bash

# Configuration example: verify firmware version after update via Orbi admin CLI
show version
show system firmware
# Confirm both router and satellite report the patched build referenced in the NETGEAR advisory