📄 Description (English)
D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability — D-Link DIR-825 R1 devices contain a buffer overflow vulnerability in the web interface that may allow for remote code execution.
🤖 AI Executive Summary
D-Link DIR-825 R1 routers contain a critical buffer overflow vulnerability (CVSS 9.0) in the web interface enabling unauthenticated remote code execution. This affects legacy networking equipment commonly deployed in Saudi organizations, with public exploits available. Immediate patching or device replacement is essential to prevent network compromise and lateral movement into critical infrastructure.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 07:34
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi banking sector (legacy network infrastructure), government agencies (NCA, NCSC), healthcare institutions, and telecommunications providers (STC, Mobily). DIR-825 R1 devices are commonly used as edge routers in enterprise networks. Successful exploitation enables attackers to establish persistent network access, intercept communications, and pivot to internal systems. Energy sector (ARAMCO) and critical infrastructure operators face elevated risk if these devices are deployed in operational technology networks.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Institutions
Energy and Utilities
Telecommunications
Critical Infrastructure
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 D-Link DIR-825 R1 devices in your network using network scanning tools (nmap, Shodan queries)
2. Isolate affected devices from critical network segments if patching cannot be completed immediately
3. Disable remote web interface access (restrict to internal networks only)
4. Change default credentials and implement strong authentication
PATCHING:
1. Download latest firmware from D-Link support portal (verify firmware version > 1.13)
2. Apply patches during maintenance windows with change management approval
3. Test patches in non-production environment first
4. Document patch deployment and verification
COMPENSATING CONTROLS (if patching delayed):
1. Implement WAF rules to block buffer overflow payloads
2. Deploy network segmentation to isolate router management interfaces
3. Enable logging and monitoring on router access attempts
4. Implement rate limiting on web interface
DETECTION:
1. Monitor for HTTP requests with oversized headers/payloads to router web interface
2. Alert on unexpected administrative access to DIR-825 devices
3. Track firmware version changes and unauthorized configuration modifications
4. Monitor for reverse shell connections from router IP addresses
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة D-Link DIR-825 R1 في شبكتك باستخدام أدوات المسح (nmap، استعلامات Shodan)
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة إذا لم يكن التصحيح ممكنًا فورًا
3. تعطيل الوصول عن بعد إلى واجهة الويب (تقييد الشبكات الداخلية فقط)
4. تغيير بيانات الاعتماد الافتراضية وتنفيذ المصادقة القوية
التصحيح:
1. تنزيل أحدث البرامج الثابتة من بوابة دعم D-Link (التحقق من إصدار البرنامج > 1.13)
2. تطبيق التصحيحات خلال نوافذ الصيانة مع موافقة إدارة التغيير
3. اختبار التصحيحات في بيئة غير الإنتاج أولاً
4. توثيق نشر التصحيح والتحقق
الضوابط البديلة (إذا تأخر التصحيح):
1. تنفيذ قواعد WAF لحظر حمولات تجاوز المخزن المؤقت
2. نشر تقسيم الشبكة لعزل واجهات إدارة الموجه
3. تفعيل التسجيل والمراقبة على محاولات الوصول إلى الموجه
4. تنفيذ تحديد معدل على واجهة الويب
الكشف:
1. مراقبة طلبات HTTP بعناوين/حمولات مفرطة الحجم إلى واجهة ويب الموجه
2. التنبيه على الوصول الإداري غير المتوقع إلى أجهزة DIR-825
3. تتبع تغييرات إصدار البرنامج الثابت والتعديلات غير المصرح بها على الإعدادات
4. مراقبة اتصالات الأصداف العكسية من عناوين IP للموجه
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.8.1.1 - Asset inventory and management
A.8.2.1 - Classification of information
A.8.3.1 - Media handling
A.13.1.1 - Network security perimeter
A.13.1.3 - Segregation of networks
A.14.2.1 - Secure development policy
A.14.2.5 - Secure development environment
🔵 SAMA CSF
ID.AM-2 - Software platforms and applications are inventoried
PR.AC-1 - Identities and credentials are issued and managed
PR.DS-2 - Data in transit is protected
PR.PT-1 - Audit/log records are determined, documented, implemented, and reviewed
DE.CM-1 - The network is monitored to detect potential cybersecurity events
🟡 ISO 27001:2022
A.5.1 - Policies for information security
A.8.1 - Asset management
A.13.1 - Network security
A.14.2 - Secure development and maintenance
A.18.1 - Compliance with legal and regulatory requirements
🟣 PCI DSS v4.0
Requirement 1 - Install and maintain a firewall configuration
Requirement 2 - Do not use vendor-supplied defaults
Requirement 6 - Develop and maintain secure systems and applications
Requirement 11 - Regularly test security systems and processes
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
D-Link:DIR-825 R1 Devices