CVE-2026-1407
📋 TL;DR
This vulnerability in Beetel 777VR1 routers allows attackers with physical access to the device to extract sensitive information via the UART interface. The exploit requires physical device access and has high complexity, making it difficult to execute remotely. Only users of affected Beetel router models with vulnerable firmware versions are impacted.
💻 Affected Systems
- Beetel 777VR1
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers with physical access could extract sensitive configuration data, credentials, or encryption keys from the router, potentially compromising network security.
Likely Case
Limited information disclosure to attackers with physical device access, possibly revealing non-critical configuration details.
If Mitigated
Minimal impact if physical security controls prevent unauthorized access to devices.
🎯 Exploit Status
Exploit requires physical device access and technical skill to interface with UART pins. Public exploit code exists but execution is difficult.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available - vendor did not respond to disclosure
Restart Required: No
Instructions:
No official patch available. Consider replacing affected devices or implementing physical security controls.
🔧 Temporary Workarounds
Physical Security Hardening
allImplement physical security measures to prevent unauthorized access to router hardware
UART Interface Disable/Protection
allIf firmware allows, disable or password-protect UART debugging interface
🧯 If You Can't Patch
- Deploy physical security controls: locked cabinets, access logs, surveillance for router locations
- Replace affected Beetel routers with different models or from vendors with better security response
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface or serial console. Vulnerable if version is 01.00.09 or earlier.Check Version:
Check via router web interface at 192.168.1.1 or serial console connectionVerify Fix Applied:
No fix available to verify. Consider device replacement as mitigation.📡 Detection & Monitoring
Log Indicators:
- Physical access logs showing unauthorized entry to router locations
- Serial console access attempts if logging enabled
Network Indicators:
- No network-based indicators - attack requires physical access
SIEM Query:
No applicable network SIEM query - focus on physical security monitoring