📄 Description (English)
Multiple DrayTek Vigor Routers Web Management Page Vulnerability — DrayTek Vigor3900, Vigor2960, and Vigor300B routers contain an unspecified vulnerability that allows for remote code execution.
🤖 AI Executive Summary
CVE-2020-8515 is a critical remote code execution vulnerability affecting DrayTek Vigor routers (3900, 2960, 300B series) with a CVSS score of 9.0. The vulnerability in the web management interface allows unauthenticated attackers to execute arbitrary code remotely. With publicly available exploits and widespread router deployment in Saudi organizations, this poses an immediate and severe threat to network infrastructure security.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 16:17
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses critical risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), telecommunications providers (STC, Mobily), and energy sector (ARAMCO, SEC). DrayTek routers are commonly deployed as edge devices in enterprise networks across these sectors. Successful exploitation could lead to complete network compromise, lateral movement to critical systems, data exfiltration, and service disruption. Government and financial institutions face regulatory compliance violations under SAMA CSF and NCA ECC 2024 frameworks.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Telecommunications
Energy and Utilities
Healthcare
Education
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all DrayTek Vigor routers (3900, 2960, 300B) in your network inventory immediately
2. Isolate affected routers from internet-facing access if patching cannot be completed within 24 hours
3. Disable remote management access to router web interfaces; restrict to local network only
4. Change all default and administrative credentials on affected devices
5. Monitor router logs for suspicious access attempts (HTTP POST requests to management pages)
PATCHING GUIDANCE:
1. Download latest firmware from DrayTek official website for each model
2. Verify firmware integrity using provided checksums
3. Apply patches during maintenance windows with change management approval
4. Test functionality post-patch before returning to production
COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement network segmentation - restrict management interface access via firewall rules
2. Deploy WAF rules to block suspicious HTTP requests to /cgi-bin/ paths
3. Enable VPN-only access to management interfaces
4. Implement IP whitelisting for administrative access
DETECTION RULES:
1. Monitor for HTTP requests to /cgi-bin/admin* endpoints without authentication
2. Alert on unusual POST requests to router management pages
3. Track failed login attempts followed by successful access
4. Monitor for firmware modification timestamps
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع أجهزة التوجيه DrayTek Vigor (3900 و2960 و300B) في جرد الشبكة الخاص بك فوراً
2. عزل الأجهزة المتأثرة عن الوصول المواجه للإنترنت إذا لم يتمكن من تطبيق التصحيحات خلال 24 ساعة
3. تعطيل الوصول الإداري البعيد إلى واجهات الويب للموجهات؛ تقييد الوصول للشبكة المحلية فقط
4. تغيير جميع بيانات الاعتماد الافتراضية والإدارية على الأجهزة المتأثرة
5. مراقبة سجلات الموجه لمحاولات الوصول المريبة (طلبات HTTP POST إلى صفحات الإدارة)
إرشادات التصحيح:
1. قم بتنزيل أحدث البرامج الثابتة من موقع DrayTek الرسمي لكل نموذج
2. تحقق من سلامة البرنامج الثابت باستخدام المجاميع المرجعية المتوفرة
3. تطبيق التصحيحات خلال نوافذ الصيانة مع موافقة إدارة التغيير
4. اختبر الوظائف بعد التصحيح قبل العودة إلى الإنتاج
الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تنفيذ تقسيم الشبكة - تقييد وصول واجهة الإدارة عبر قواعد جدار الحماية
2. نشر قواعد WAF لحظر طلبات HTTP المريبة إلى مسارات /cgi-bin/
3. تفعيل وصول VPN فقط إلى واجهات الإدارة
4. تنفيذ القائمة البيضاء للعناوين IP للوصول الإداري
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.8.1 - Asset Management and Inventory Control
A.8.2 - Information and Other Assets
A.13.1 - Network Security
A.14.2 - System Development and Change Management
A.12.6 - Management of Technical Vulnerabilities
🔵 SAMA CSF
ID.AM-1 - Physical devices and software assets are inventoried
PR.AC-1 - Identities and credentials are issued and managed
PR.PT-2 - Removable media is protected and its use restricted
DE.CM-8 - Vulnerability scans are performed
RS.MI-2 - Incidents are mitigated
🟡 ISO 27001:2022
A.5.19 - Inventory of information and other assets
A.8.1 - Asset management
A.12.6 - Management of technical vulnerabilities
A.14.2 - Change management
A.13.1 - Network security perimeter
🟣 PCI DSS v4.0
Requirement 1.1 - Firewall configuration standards
Requirement 6.2 - Security patches installation
Requirement 11.2 - Vulnerability scanning
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
DrayTek:Multiple Vigor Routers