📄 Description (English)
A vulnerability was detected in Edimax BR-6675nD 1.12. Affected by this vulnerability is the function formPPPoESetup of the file /goform/formPPPoESetup of the component POST Request Handler. Performing a manipulation of the argument pppUserName results in buffer overflow. The attack may be initiated 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 in POST requests. With no patch available and public exploit details disclosed, this poses immediate risk to organizations using this router model for network access and connectivity.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 27, 2026 13:44
🇸🇦 Saudi Arabia Impact Assessment
Saudi telecommunications providers (STC, Mobily, Zain) and ISPs using Edimax BR-6675nD routers for customer premises equipment (CPE) deployments face critical risk. Government agencies and banking sector organizations with remote office connectivity via these routers are vulnerable to network compromise. Healthcare facilities and energy sector organizations (ARAMCO subsidiaries) relying on these devices for WAN connectivity could experience service disruption and data exfiltration. Small and medium enterprises across Saudi Arabia commonly use this budget router model, creating widespread exposure.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Internet Service Providers
Banking and Financial Services
Government and Public Administration
Healthcare
Energy and Utilities (ARAMCO)
Small and Medium Enterprises
Education
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Edimax BR-6675nD devices in your network using network scanning tools (nmap, Shodan queries for Saudi IP ranges)
2. Isolate affected routers from critical network segments if possible
3. Monitor router access logs for suspicious POST requests to /goform/formPPPoESetup
4. Implement network segmentation to limit router administrative access
COMPENSATING CONTROLS (no patch available):
1. Deploy Web Application Firewall (WAF) rules to block POST requests with oversized pppUserName parameters (>256 bytes)
2. Restrict administrative access to router management interfaces via IP whitelisting
3. Disable remote management features if not required
4. Implement rate limiting on /goform/formPPPoESetup endpoint
5. Replace affected routers with patched alternatives from other vendors (TP-Link, D-Link with current firmware)
DETECTION RULES:
1. Monitor for POST requests to /goform/formPPPoESetup with pppUserName parameter >256 characters
2. Alert on multiple failed authentication attempts to router management interface
3. Track firmware version 1.12 across network inventory
4. Monitor for unexpected process execution or memory corruption indicators on router logs
PATCHING GUIDANCE:
1. Contact Edimax support for firmware updates (unlikely given vendor non-response)
2. Plan immediate replacement with alternative router models
3. Document all affected devices for compliance reporting
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Edimax BR-6675nD في شبكتك باستخدام أدوات المسح (nmap، استعلامات Shodan للنطاقات السعودية)
2. عزل أجهزة التوجيه المتأثرة عن قطاعات الشبكة الحرجة إن أمكن
3. مراقبة سجلات وصول جهاز التوجيه للطلبات المريبة إلى /goform/formPPPoESetup
4. تنفيذ تقسيم الشبكة لتحديد وصول الإدارة لجهاز التوجيه
الضوابط البديلة (لا يوجد تصحيح متاح):
1. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحظر طلبات POST بمعاملات pppUserName كبيرة الحجم (>256 بايت)
2. تقييد الوصول الإداري لواجهات إدارة جهاز التوجيه عبر القائمة البيضاء للعناوين
3. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
4. تنفيذ تحديد معدل على نقطة نهاية /goform/formPPPoESetup
5. استبدال أجهزة التوجيه المتأثرة بدائل معصومة من بائعين آخرين
قواعد الكشف:
1. مراقبة طلبات POST إلى /goform/formPPPoESetup بمعامل pppUserName >256 حرف
2. تنبيه محاولات المصادقة الفاشلة المتعددة لواجهة إدارة جهاز التوجيه
3. تتبع الإصدار 1.12 عبر جرد الشبكة
4. مراقبة تنفيذ العمليات غير المتوقعة أو مؤشرات تلف الذاكرة في سجلات جهاز التوجيه
إرشادات التصحيح:
1. الاتصال بدعم Edimax للحصول على تحديثات البرامج الثابتة
2. التخطيط للاستبدال الفوري بنماذج أجهزة توجيه بديلة
3. توثيق جميع الأجهزة المتأثرة لإعداد التقارير
📋 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
SAMA CSF ID.AM-1 - Physical Devices and Software Assets
SAMA CSF PR.IP-12 - Information and Records Management
SAMA CSF DE.CM-8 - Vulnerability Scans
SAMA CSF RS.MI-2 - Incidents are mitigated
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Addressing information security in supplier relationships
ISO 27001:2022 A.8.1 - Inventory of assets
ISO 27001:2022 A.8.2 - Ownership of assets
ISO 27001:2022 A.8.6 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Ensure security patches are installed within defined timeframe
PCI DSS 11.2 - Run automated vulnerability scanning tools