📄 Description (English)
A flaw has been found in Tenda i12 1.0.0.11(3862). Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDset of the component Parameter Handler. This manipulation of the argument index/wl_radio causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.
🤖 AI Executive Summary
A critical stack-based buffer overflow vulnerability exists in Tenda i12 wireless router firmware (version 1.0.0.11(3862) and potentially earlier versions) affecting the WiFi SSID configuration parameter handler. The vulnerability allows unauthenticated remote attackers to execute arbitrary code by sending specially crafted requests to the /goform/wifiSSIDset endpoint. With a CVSS score of 8.8 and published exploit details, this poses an immediate threat to organizations relying on Tenda networking equipment.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 18:12
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations across multiple sectors: (1) Government agencies and NCA infrastructure using Tenda routers for network connectivity; (2) Banking and financial institutions (SAMA-regulated) using Tenda equipment in branch networks or remote office connectivity; (3) Healthcare facilities relying on Tenda routers for medical device networks; (4) Telecommunications providers (STC, Mobily, Zain) using Tenda equipment in network infrastructure; (5) Energy sector (ARAMCO, SEC) utilizing Tenda routers in operational technology networks. The remote unauthenticated nature of the exploit makes it particularly dangerous for organizations with internet-facing Tenda devices. Potential impacts include complete network compromise, lateral movement into critical systems, data exfiltration, and service disruption.
🏢 Affected Saudi Sectors
Government and Public Administration
Banking and Financial Services
Healthcare and Medical Facilities
Telecommunications
Energy and Utilities
Education
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda i12 devices in your network using network scanning tools (nmap, Shodan queries for Tenda devices)
2. Isolate affected Tenda i12 routers from internet-facing positions immediately
3. Implement network segmentation to restrict access to the /goform/wifiSSIDset endpoint
4. Monitor for exploitation attempts using IDS/IPS signatures
PATCHING GUIDANCE:
1. Check Tenda's official website for firmware updates beyond version 1.0.0.11(3862)
2. If no patch is available, plan device replacement with alternative vendors (Cisco, Fortinet, Ubiquiti)
3. Document all Tenda i12 devices for replacement scheduling
COMPENSATING CONTROLS (if replacement not immediately possible):
1. Disable remote management interfaces (disable WAN access to admin panel)
2. Implement strict firewall rules blocking external access to port 80/443 on Tenda devices
3. Deploy WAF rules to block requests containing suspicious index/wl_radio parameters
4. Implement network-based IPS signatures to detect buffer overflow attempts
5. Change default credentials and implement strong authentication
6. Restrict administrative access to trusted IP ranges only
7. Enable logging and monitoring of all requests to /goform/ endpoints
DETECTION RULES:
1. Monitor HTTP requests to /goform/wifiSSIDset with oversized index or wl_radio parameters
2. Alert on any POST requests to /goform/wifiSSIDset from external networks
3. Track firmware version of Tenda devices; alert if version is 1.0.0.11(3862) or earlier
4. Monitor for unusual process execution or memory access patterns on Tenda devices if accessible via SSH
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda i12 في شبكتك باستخدام أدوات المسح (nmap، استعلامات Shodan)
2. عزل أجهزة Tenda i12 المتأثرة عن المواضع المواجهة للإنترنت فوراً
3. تنفيذ تقسيم الشبكة لتقييد الوصول إلى نقطة النهاية /goform/wifiSSIDset
4. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS
إرشادات التصحيح:
1. تحقق من موقع Tenda الرسمي للحصول على تحديثات البرامج الثابتة بعد الإصدار 1.0.0.11(3862)
2. إذا لم يكن هناك تصحيح متاح، خطط لاستبدال الجهاز بموردين بدلاء (Cisco، Fortinet، Ubiquiti)
3. توثيق جميع أجهزة Tenda i12 لجدولة الاستبدال
الضوابط التعويضية:
1. تعطيل واجهات الإدارة البعيدة (تعطيل الوصول عبر WAN إلى لوحة الإدارة)
2. تنفيذ قواعد جدار الحماية الصارمة لحظر الوصول الخارجي إلى المنافذ 80/443
3. نشر قواعد WAF لحظر الطلبات التي تحتوي على معاملات index/wl_radio مريبة
4. تنفيذ توقيعات IPS المستندة إلى الشبكة للكشف عن محاولات تجاوز المخزن المؤقت
5. تغيير بيانات الاعتماد الافتراضية وتنفيذ المصادقة القوية
6. تقييد الوصول الإداري إلى نطاقات IP الموثوقة فقط
7. تفعيل السجلات ومراقبة جميع الطلبات إلى نقاط نهاية /goform/
قواعد الكشف:
1. مراقبة طلبات HTTP إلى /goform/wifiSSIDset بمعاملات index أو wl_radio كبيرة الحجم
2. تنبيه على أي طلبات POST إلى /goform/wifiSSIDset من شبكات خارجية
3. تتبع إصدار البرنامج الثابت لأجهزة Tenda؛ تنبيه إذا كان الإصدار 1.0.0.11(3862) أو أقدم
4. مراقبة تنفيذ العمليات غير العادية على أجهزة Tenda
📋 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 and logging
ECC 2024 A.13.1.1 - Network security perimeter
🔵 SAMA CSF
SAMA CSF ID.BE-1 - Asset management
SAMA CSF PR.DS-6 - Data security
SAMA CSF DE.CM-1 - Detection processes
SAMA CSF RS.MI-2 - Incident response and management
🟡 ISO 27001:2022
ISO 27001:2022 A.12.2.1 - Change management
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
ISO 27001:2022 A.8.1.1 - Inventory of assets
ISO 27001:2022 A.12.3.1 - Segregation of networks
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning
PCI DSS 1.1 - Firewall configuration standards