CVE-2026-0407
📋 TL;DR
This CVE describes an authentication bypass vulnerability in NETGEAR WiFi range extenders that allows attackers on the same network to access the admin panel without proper credentials. Attackers need either WiFi authentication or physical Ethernet port access. This affects multiple NETGEAR range extender models.
💻 Affected Systems
- NETGEAR EX2800
- NETGEAR EX3110
- NETGEAR EX5000
- NETGEAR EX6110
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full administrative control of the range extender, can reconfigure network settings, intercept traffic, deploy malware, or use the device as a pivot point to attack other network devices.
Likely Case
Attacker accesses admin panel to change network settings, potentially disrupting connectivity or enabling further attacks on connected devices.
If Mitigated
With proper network segmentation and access controls, impact is limited to the range extender itself without compromising the broader network.
🎯 Exploit Status
Exploitation appears straightforward once an attacker has network access. No authentication required beyond basic network connectivity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware versions
Vendor Advisory: https://kb.netgear.com/000070442/January-2026-NETGEAR-Security-Advisory
Restart Required: Yes
Instructions:
1. Visit NETGEAR support page for your specific model. 2. Download latest firmware. 3. Log into admin panel. 4. Navigate to firmware update section. 5. Upload and install new firmware. 6. Device will restart automatically.
🔧 Temporary Workarounds
Network Segmentation
allIsolate range extenders on separate VLAN to limit attack surface
Disable Admin Access
allDisable web admin interface or restrict to specific management IPs
🧯 If You Can't Patch
- Physically secure devices to prevent unauthorized Ethernet access
- Implement strict network access controls and monitor for unauthorized admin panel access attempts
🔍 How to Verify
Check if Vulnerable:
Check device model and firmware version against NETGEAR advisory. Attempt to access admin panel from adjacent network position without credentials.Check Version:
Log into admin panel and check firmware version in settings, or use 'nmap -sV' to identify device versionVerify Fix Applied:
After updating firmware, verify you cannot access admin panel without proper authentication from adjacent network position.📡 Detection & Monitoring
Log Indicators:
- Unauthorized admin login attempts
- Firmware version changes
- Configuration changes without authorized user
Network Indicators:
- Unexpected admin panel access from non-management IPs
- HTTP requests to range extender admin interface from unauthorized sources
SIEM Query:
source_ip IN (range_extender_ips) AND (http_path CONTAINS '/admin' OR http_path CONTAINS '/login') AND http_status=200 AND user_agent NOT IN (authorized_admin_agents)