📄 Description (English)
A vulnerability was determined in Tenda F456 1.0.0.5. The affected element is the function formwebtypelibrary of the file /goform/webtypelibrary. This manipulation of the argument menufacturer/Go causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
🤖 AI Executive Summary
A critical stack-based buffer overflow vulnerability exists in Tenda F456 router firmware version 1.0.0.5 affecting the /goform/webtypelibrary endpoint. The vulnerability allows remote attackers to execute arbitrary code by manipulating the 'menufacturer/Go' parameter, with a CVSS score of 8.8. No patch is currently available, making immediate mitigation essential for Saudi organizations relying on this router model.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 22, 2026 11:32
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi telecommunications infrastructure (STC, Mobily, Zain), government agencies, and small-to-medium enterprises using Tenda F456 routers as network perimeter devices. Banking sector organizations and ARAMCO facilities utilizing these routers for branch/facility connectivity face potential network compromise. Healthcare institutions and educational facilities are also at risk. The lack of available patches creates a critical exposure window for remote code execution attacks targeting critical infrastructure.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services
Government and Public Administration
Energy (ARAMCO and related)
Healthcare
Education
Small and Medium Enterprises (SMEs)
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F456 devices in your network using network scanning tools (Nmap, Shodan queries for 'Tenda F456')
2. Isolate affected devices from critical network segments if possible
3. Implement network segmentation to restrict access to the /goform/webtypelibrary endpoint
4. Monitor for suspicious HTTP POST requests to /goform/webtypelibrary with 'menufacturer' parameters
COMPENSATING CONTROLS:
5. Deploy Web Application Firewall (WAF) rules blocking requests to /goform/webtypelibrary endpoint
6. Implement strict input validation at network boundary using IDS/IPS (Snort/Suricata rules for buffer overflow patterns)
7. Restrict administrative access to router management interfaces (limit to specific IP ranges)
8. Disable remote management features if not required
9. Enable router logging and forward logs to SIEM for analysis
DETECTION RULES:
10. Monitor for HTTP requests with oversized 'menufacturer' parameter values (>256 bytes)
11. Alert on any POST requests to /goform/webtypelibrary containing special characters or encoded payloads
12. Track failed authentication attempts and unusual administrative access patterns
13. Monitor for unexpected process execution or system crashes on router devices
LONG-TERM:
14. Plan replacement of Tenda F456 devices with patched alternatives or alternative vendors
15. Establish vendor communication channels for security updates
16. Implement firmware version tracking and automated update mechanisms
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F456 في شبكتك باستخدام أدوات المسح (Nmap، استعلامات Shodan)
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى نقطة النهاية /goform/webtypelibrary
4. مراقبة طلبات HTTP POST المريبة إلى /goform/webtypelibrary مع معاملات 'menufacturer'
الضوابط التعويضية:
5. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحجب الطلبات إلى نقطة النهاية
6. تطبيق التحقق الصارم من صحة المدخلات باستخدام IDS/IPS
7. تقييد الوصول الإداري إلى واجهات إدارة جهاز التوجيه
8. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
9. تفعيل تسجيل جهاز التوجيه وإرسال السجلات إلى SIEM
قواعد الكشف:
10. مراقبة طلبات HTTP بقيم معاملات 'menufacturer' كبيرة الحجم
11. التنبيه على أي طلبات POST تحتوي على أحرف خاصة أو حمولات مشفرة
12. تتبع محاولات المصادقة الفاشلة والأنماط غير العادية
13. مراقبة تنفيذ العمليات غير المتوقعة أو أعطال النظام
المدى الطويل:
14. التخطيط لاستبدال أجهزة Tenda F456 بدائل معدلة أو من موردين آخرين
15. إنشاء قنوات اتصال مع المورد للحصول على التحديثات الأمنية
16. تطبيق تتبع إصدار البرامج الثابتة وآليات التحديث المؤتمتة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 - 5.1.1: Network Security Controls - Perimeter Protection
ECC 2024 - 5.2.1: Access Control - Authentication and Authorization
ECC 2024 - 6.1.1: Vulnerability Management - Identification and Assessment
ECC 2024 - 6.2.1: Patch Management - Timely Application of Security Updates
🔵 SAMA CSF
SAMA CSF - Governance & Risk Management: Vulnerability and Patch Management
SAMA CSF - Protection: Network Security and Perimeter Defense
SAMA CSF - Detection: Intrusion Detection and Prevention Systems
SAMA CSF - Response: Incident Response and Containment Procedures
🟡 ISO 27001:2022
ISO 27001:2022 - A.5.1: Policies for Information Security
ISO 27001:2022 - A.8.1: Asset Management
ISO 27001:2022 - A.8.2: Information Classification
ISO 27001:2022 - A.12.6: Technical Vulnerability Management
ISO 27001:2022 - A.14.2: Software Development Security
🟣 PCI DSS v4.0.1
PCI DSS 4.1: Firewall Configuration Standards
PCI DSS 6.2: Security Patches and Updates
PCI DSS 11.2: Vulnerability Scanning
🔗 References & Sources 5