📄 Description (English)
A vulnerability was determined in Tenda F451 1.0.0.7. This vulnerability affects the function fromSafeMacFilter of the file /goform/SafeMacFilter of the component httpd. Executing a manipulation of the argument page/menufacturer can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
🤖 AI Executive Summary
A critical stack-based buffer overflow vulnerability exists in Tenda F451 router firmware (version 1.0.0.7) affecting the SafeMacFilter function. The vulnerability allows remote attackers to execute arbitrary code by manipulating the 'page/menufacturer' parameter without authentication. With a CVSS score of 8.8 and public exploit disclosure, this poses an immediate threat to organizations using this router model for network access control.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 22, 2026 23:48
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in banking, government, healthcare, and energy sectors using Tenda F451 routers for network perimeter security face critical risk. SAMA-regulated financial institutions and NCA-supervised government entities are particularly vulnerable if these routers are deployed in critical network segments. Telecom providers (STC, Mobily, Zain) and ARAMCO subsidiaries may have these devices in branch offices or remote locations. The lack of authentication requirement makes this exploitable from the internet, potentially allowing lateral movement into internal networks.
🏢 Affected Saudi Sectors
Banking and Financial Services (SAMA-regulated)
Government and Public Administration (NCA-supervised)
Healthcare and Medical Facilities
Energy and Petroleum (ARAMCO subsidiaries)
Telecommunications (STC, Mobily, Zain)
Education and Universities
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F451 devices in your network using network scanning tools (nmap, Shodan queries for 'Tenda F451')
2. Isolate affected devices from internet-facing segments immediately
3. Implement network segmentation to restrict access to the httpd service (port 80/443)
4. Enable firewall rules blocking external access to /goform/SafeMacFilter endpoint
5. Monitor for exploitation attempts using IDS/IPS signatures detecting buffer overflow patterns
PATCHING GUIDANCE:
- Contact Tenda support for firmware updates beyond 1.0.0.7
- If no patch available, consider device replacement with alternative vendors (Cisco, Fortinet, Ubiquiti)
- Test any firmware updates in isolated lab environment before production deployment
COMPENSATING CONTROLS:
- Deploy WAF (Web Application Firewall) rules to block requests with oversized 'page' or 'menufacturer' parameters
- Implement strict input validation at network boundary
- Use VPN/IPSec for remote access instead of direct router access
- Disable remote management features if not required
DETECTION RULES:
- Monitor HTTP requests to /goform/SafeMacFilter with parameter values exceeding 256 bytes
- Alert on POST requests with 'page' parameter containing special characters or excessive length
- Track failed authentication attempts to router management interface
- Log all access to httpd service from external IP ranges
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F451 في شبكتك باستخدام أدوات المسح (nmap، استعلامات Shodan)
2. عزل الأجهزة المتأثرة عن القطاعات المواجهة للإنترنت فوراً
3. تنفيذ تقسيم الشبكة لتقييد الوصول إلى خدمة httpd (المنفذ 80/443)
4. تفعيل قواعد جدار الحماية لحظر الوصول الخارجي إلى نقطة نهاية /goform/SafeMacFilter
5. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS
إرشادات التصحيح:
- الاتصال بدعم Tenda للحصول على تحديثات البرامج الثابتة
- إذا لم يكن هناك تصحيح متاح، فكر في استبدال الجهاز بموردين بدائل
- اختبر أي تحديثات برامج ثابتة في بيئة معزولة قبل النشر
الضوابط البديلة:
- نشر قواعد WAF لحظر الطلبات ذات المعاملات الكبيرة
- تنفيذ التحقق الصارم من صحة المدخلات
- استخدام VPN بدلاً من الوصول المباشر
- تعطيل ميزات الإدارة البعيدة إن لم تكن مطلوبة
قواعد الكشف:
- مراقبة طلبات HTTP إلى /goform/SafeMacFilter بقيم معاملات تتجاوز 256 بايت
- تنبيهات على طلبات POST بمعامل 'page' يحتوي على أحرف خاصة
- تتبع محاولات المصادقة الفاشلة
- تسجيل جميع الوصول إلى خدمة httpd من نطاقات IP خارجية
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control
ECC 2024 A.12.6 - Management of Technical Vulnerabilities
ECC 2024 A.14.2 - System Development and Maintenance
ECC 2024 A.13.1 - Network Security
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Physical and Cyber Assets
SAMA CSF PR.PT-2 - Protective Technology
SAMA CSF DE.CM-1 - Detection Processes
SAMA CSF RS.MI-1 - Incident Response Planning
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Vulnerability Management
ISO 27001:2022 A.8.1 - Asset Management
ISO 27001:2022 A.8.2 - Configuration Management
ISO 27001:2022 A.14.2 - System Development Security
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security Patches and Updates
PCI DSS 11.2 - Vulnerability Scanning