📄 Description (English)
A vulnerability was found in Tenda F451 1.0.0.7. Affected by this issue is the function formWrlExtraSet of the file /goform/WrlExtraSet. The manipulation of the argument GO results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.
🤖 AI Executive Summary
A critical stack-based buffer overflow vulnerability exists in Tenda F451 wireless router firmware version 1.0.0.7, affecting the WrlExtraSet function. The vulnerability allows remote attackers to execute arbitrary code by manipulating the GO parameter, with no patch currently available. This poses significant risk to Saudi organizations relying on Tenda routers for network infrastructure.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 09:03
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using Tenda routers for network infrastructure. Banking sector (SAMA-regulated institutions) at risk if routers used in branch networks or remote access infrastructure. Healthcare organizations and critical infrastructure operators using Tenda equipment for network connectivity face potential compromise. Small and medium enterprises (SMEs) across Saudi Arabia heavily rely on affordable Tenda routers, making them widespread targets. Energy sector (ARAMCO and related entities) potentially affected if Tenda routers deployed in operational technology networks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services
Government and Public Administration
Healthcare
Energy and Utilities
Small and Medium Enterprises
Retail and E-commerce
Education
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.6
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F451 devices running firmware 1.0.0.7 in your network using network scanning tools
2. Isolate affected routers from critical systems and segment network access
3. Implement network-level access controls to restrict access to router management interfaces (typically port 80/443)
4. Monitor for suspicious connections to affected devices
COMPENSATING CONTROLS (until patch available):
5. Disable remote management features on affected routers
6. Restrict administrative access to trusted IP addresses only
7. Implement Web Application Firewall (WAF) rules to block malicious GO parameter payloads
8. Deploy intrusion detection signatures for buffer overflow attempts
9. Consider replacing Tenda F451 devices with alternative vendors offering security patches
DETECTION RULES:
10. Monitor HTTP POST requests to /goform/WrlExtraSet with oversized GO parameters
11. Alert on any firmware version 1.0.0.7 devices attempting remote connections
12. Track failed authentication attempts on router management interfaces
13. Implement packet inspection for shellcode patterns in WrlExtraSet requests
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F451 التي تعمل بالإصدار 1.0.0.7 في شبكتك باستخدام أدوات فحص الشبكة
2. عزل الأجهزة المتأثرة عن الأنظمة الحرجة وتقسيم الوصول إلى الشبكة
3. تطبيق عناصر تحكم الوصول على مستوى الشبكة لتقييد الوصول إلى واجهات إدارة الموجه
4. مراقبة الاتصالات المريبة بالأجهزة المتأثرة
عناصر التحكم البديلة (حتى توفر التصحيح):
5. تعطيل ميزات الإدارة البعيدة على الأجهزة المتأثرة
6. تقييد الوصول الإداري إلى عناوين IP الموثوقة فقط
7. تطبيق قواعد جدار حماية تطبيقات الويب لحجب حمولات معامل GO الضارة
8. نشر توقيعات كشف الاختراق لمحاولات تجاوز المخزن المؤقت
9. النظر في استبدال أجهزة Tenda F451 بموردين بدائل يوفرون تصحيحات أمنية
قواعد الكشف:
10. مراقبة طلبات HTTP POST إلى /goform/WrlExtraSet مع معاملات GO كبيرة الحجم
11. التنبيه على أي أجهزة بالإصدار 1.0.0.7 تحاول الاتصالات البعيدة
12. تتبع محاولات المصادقة الفاشلة على واجهات إدارة الموجه
13. تطبيق فحص الحزم للبحث عن أنماط shellcode في طلبات WrlExtraSet
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.14.2.1 - Secure development policy
ECC 2024 A.12.2.1 - Monitoring of system use
ECC 2024 A.13.1.1 - Network security perimeter
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification
PR.DS-6 - Integrity checking mechanisms
DE.CM-1 - Network monitoring
RS.MI-1 - Incident response procedures
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development, acceptance and transition
A.13.1.1 - Network security perimeter
A.12.2.1 - Monitoring of system use
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates
Requirement 11.2 - Vulnerability scanning
Requirement 1.1 - Firewall configuration standards