📄 Description (English)
A vulnerability was detected in Edimax BR-6675nD 1.12. This vulnerability affects the function formsetPPPoE of the file /goform/formsetPPPoE of the component POST Request Handler. Performing a manipulation of the argument pppUserName results in buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
🤖 AI Executive Summary
A critical buffer overflow vulnerability exists in Edimax BR-6675nD router firmware version 1.12 affecting the PPPoE configuration handler. The vulnerability allows remote attackers to execute arbitrary code by manipulating the pppUserName parameter, with no vendor patch available. This poses significant risk to Saudi organizations using this router model for network infrastructure and remote access.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 27, 2026 17:40
🇸🇦 Saudi Arabia Impact Assessment
High impact for Saudi telecommunications providers (STC, Mobily, Zain) and ISPs using Edimax routers in customer premises equipment (CPE) deployments. Government agencies and critical infrastructure operators relying on these routers for network access face remote code execution risks. Banking sector exposure is moderate if routers are used in branch connectivity. Healthcare facilities using these devices for network management are at risk. Energy sector (ARAMCO, SEC) exposure depends on deployment in operational technology networks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Internet Service Providers
Government Agencies
Banking and Financial Services
Healthcare
Energy (ARAMCO, SEC)
Critical Infrastructure
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Edimax BR-6675nD devices running firmware 1.12 in your network inventory
2. Isolate affected routers from critical network segments if possible
3. Implement network segmentation to restrict access to router management interfaces
4. Monitor for suspicious PPPoE configuration requests
Compensating Controls:
1. Disable remote management access to affected routers (disable WAN-side access to admin interface)
2. Implement strict firewall rules blocking unauthorized access to port 80/443 on router management
3. Change default credentials immediately and enforce strong passwords
4. Deploy IDS/IPS signatures to detect buffer overflow attempts targeting /goform/formsetPPPoE
5. Restrict PPPoE configuration changes to authorized personnel only
Long-term Actions:
1. Contact Edimax support for firmware updates or end-of-life guidance
2. Plan replacement with routers from vendors providing active security support
3. Implement network access control (NAC) to prevent unauthorized device connections
4. Monitor Edimax security advisories for any future patches
Detection Rules:
- Alert on POST requests to /goform/formsetPPPoE with pppUserName parameter exceeding 256 bytes
- Monitor for unusual process execution on router following PPPoE configuration attempts
- Track failed authentication attempts to router management interface
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Edimax BR-6675nD التي تعمل بالإصدار 1.12 في جرد الشبكة
2. عزل الأجهزة المتأثرة عن قطاعات الشبكة الحرجة إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى واجهات إدارة جهاز التوجيه
4. مراقبة طلبات إعدادات PPPoE المريبة
الضوابط البديلة:
1. تعطيل الإدارة البعيدة للأجهزة المتأثرة (تعطيل الوصول من جانب WAN إلى واجهة الإدارة)
2. تطبيق قواعد جدار الحماية الصارمة لحظر الوصول غير المصرح به إلى المنافذ 80/443
3. تغيير بيانات الاعتماد الافتراضية فوراً وفرض كلمات مرور قوية
4. نشر توقيعات IDS/IPS للكشف عن محاولات تجاوز المخزن المؤقت
5. تقييد تغييرات إعدادات PPPoE للموظفين المصرح لهم فقط
الإجراءات طويلة الأجل:
1. الاتصال بدعم Edimax للحصول على تحديثات البرامج الثابتة
2. التخطيط لاستبدال الأجهزة ببدائل من بائعين يوفرون دعماً أمنياً نشطاً
3. تطبيق التحكم في الوصول إلى الشبكة (NAC)
4. مراقبة مستشارات أمان Edimax للحصول على أي تصحيحات مستقبلية
قواعد الكشف:
- تنبيهات على طلبات POST إلى /goform/formsetPPPoE مع معامل pppUserName يتجاوز 256 بايت
- مراقبة تنفيذ العمليات غير العادية على جهاز التوجيه
- تتبع محاولات المصادقة الفاشلة على واجهة إدارة جهاز التوجيه
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control
ECC 2024 A.8.2 - Information Security Perimeter
ECC 2024 A.12.6 - Management of Technical Vulnerabilities
ECC 2024 A.14.2 - System Development and Change Management
🔵 SAMA CSF
ID.AM-1 - Physical devices and software assets are inventoried
PR.AC-1 - Identities and credentials are issued, managed, verified, revoked and audited
PR.PT-1 - Security patches and updates are managed
DE.CM-8 - Vulnerability scans are performed
🟡 ISO 27001:2022
A.5.19 - Management of information security incidents
A.8.1 - Asset management
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Change management procedures
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches must be installed within defined timeframe
Requirement 11.2 - Vulnerability scanning must be performed regularly