CVE-2026-0405
📋 TL;DR
An authentication bypass vulnerability in NETGEAR Orbi routers allows local network users to access the administrative web interface without credentials. This affects multiple Orbi models running vulnerable firmware versions. Attackers on the same network can gain full router control.
💻 Affected Systems
- NETGEAR Orbi CBR750
- NETGEAR Orbi NBR750
- NETGEAR Orbi RBE370
- NETGEAR Orbi RBE371
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router compromise allowing network traffic interception, DNS hijacking, credential theft, and installation of persistent malware on connected devices.
Likely Case
Unauthorized users changing router settings, redirecting traffic, or disabling security features.
If Mitigated
Limited impact if network segmentation isolates routers and strong perimeter controls prevent unauthorized local access.
🎯 Exploit Status
Exploitation requires only network access and basic web requests; no special tools needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check NETGEAR advisory for specific fixed firmware versions
Vendor Advisory: https://kb.netgear.com/000070442/January-2026-NETGEAR-Security-Advisory
Restart Required: Yes
Instructions:
1. Log into router admin interface. 2. Navigate to Advanced > Administration > Firmware Update. 3. Check for updates and apply latest firmware. 4. Reboot router after update completes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate router management interface to trusted VLAN or separate network segment
Access Control Lists
allRestrict access to router management IP addresses to authorized devices only
🧯 If You Can't Patch
- Implement strict network segmentation to limit which devices can reach router management interface
- Enable router logging and monitor for unauthorized access attempts to admin interface
🔍 How to Verify
Check if Vulnerable:
Attempt to access router web interface from local network without credentials; if admin access is granted, device is vulnerable.Check Version:
Check router web interface under Advanced > Administration > Firmware Update for current versionVerify Fix Applied:
After patching, attempt same access test; should receive authentication prompt or be denied access.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access to admin pages in router logs
- Multiple failed login attempts followed by successful access without credentials
Network Indicators:
- HTTP requests to router admin pages from unexpected internal IPs
- Unusual traffic patterns to router management interface
SIEM Query:
source="router_logs" AND (url="*/admin/*" OR url="*/login/*") AND status=200 AND user="-"🔗 References
- https://kb.netgear.com/000070442/January-2026-NETGEAR-Security-Advisory
- https://www.netgear.com/support/product/cbr750
- https://www.netgear.com/support/product/nbr750
- https://www.netgear.com/support/product/rbe370
- https://www.netgear.com/support/product/rbe371
- https://www.netgear.com/support/product/rbe372
- https://www.netgear.com/support/product/rbe373
- https://www.netgear.com/support/product/rbe374
- https://www.netgear.com/support/product/rbe770
- https://www.netgear.com/support/product/rbe771
- https://www.netgear.com/support/product/rbe772
- https://www.netgear.com/support/product/rbe773
- https://www.netgear.com/support/product/rbe970
- https://www.netgear.com/support/product/rbe971
- https://www.netgear.com/support/product/rbr750
- https://www.netgear.com/support/product/rbr840
- https://www.netgear.com/support/product/rbr850
- https://www.netgear.com/support/product/rbr860
- https://www.netgear.com/support/product/rbre950
- https://www.netgear.com/support/product/rbre960
- https://www.netgear.com/support/product/rbs750
- https://www.netgear.com/support/product/rbs840
- https://www.netgear.com/support/product/rbs850
- https://www.netgear.com/support/product/rbs860
- https://www.netgear.com/support/product/rbse950
- https://www.netgear.com/support/product/rbse960
