📄 Description (English)
A security vulnerability has been detected in Tenda F456 1.0.0.5. This affects the function frmL7ImForm of the file /goform/L7Im. The manipulation of the argument page leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.
🤖 AI Executive Summary
A critical buffer overflow vulnerability exists in Tenda F456 router firmware version 1.0.0.5 affecting the L7Im form handler. The vulnerability allows remote attackers to execute arbitrary code by manipulating the 'page' parameter, with a CVSS score of 8.8. No patch is currently available, making immediate mitigation essential for affected organizations.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 27, 2026 17:41
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi telecommunications infrastructure (STC, Mobily, Zain), government networks (NCA, CITC), and enterprise networks using Tenda F456 routers as edge devices. Banking sector (SAMA-regulated institutions) and critical infrastructure operators (ARAMCO, SEC) are at risk if these routers are deployed in network perimeters. The remote nature of exploitation and lack of authentication requirements make this particularly dangerous for organizations with internet-facing Tenda devices.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Government (NCA, CITC)
Banking (SAMA-regulated institutions)
Energy (ARAMCO, SEC)
Healthcare
Enterprise Networks
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F456 devices running firmware 1.0.0.5 in your network using network scanning tools
2. Isolate affected devices from internet-facing positions if possible
3. Implement network segmentation to restrict access to L7Im endpoints (/goform/L7Im)
4. Monitor for exploitation attempts using IDS/IPS signatures
COMPENSATING CONTROLS (until patch available):
5. Deploy WAF rules to block requests with suspicious 'page' parameter values
6. Implement strict input validation at network boundary
7. Restrict administrative access to router management interfaces
8. Enable detailed logging on affected devices
DETECTION RULES:
- Monitor HTTP POST requests to /goform/L7Im with oversized 'page' parameters
- Alert on any firmware version 1.0.0.5 devices communicating externally
- Track failed authentication attempts on router management ports
LONG-TERM:
9. Contact Tenda for patch availability timeline
10. Plan replacement or upgrade of affected devices
11. Consider alternative router solutions if Tenda cannot provide timely patches
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F456 التي تعمل بالإصدار 1.0.0.5 في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن المواضع المواجهة للإنترنت إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى نقاط نهاية L7Im
4. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS
الضوابط البديلة (حتى توفر التصحيح):
5. نشر قواعد WAF لحجب الطلبات ذات قيم معامل 'page' المريبة
6. تطبيق التحقق الصارم من المدخلات على حدود الشبكة
7. تقييد الوصول الإداري إلى واجهات إدارة جهاز التوجيه
8. تفعيل السجلات التفصيلية على الأجهزة المتأثرة
قواعد الكشف:
- مراقبة طلبات HTTP POST إلى /goform/L7Im بمعاملات 'page' كبيرة الحجم
- تنبيهات على أجهزة الإصدار 1.0.0.5 التي تتواصل خارجياً
- تتبع محاولات المصادقة الفاشلة على منافذ إدارة جهاز التوجيه
المدى الطويل:
9. التواصل مع Tenda بشأن جدول توفر التصحيح
10. التخطيط لاستبدال أو ترقية الأجهزة المتأثرة
11. النظر في حلول جهاز توجيه بديلة إذا لم تتمكن Tenda من توفير تصحيحات في الوقت المناسب
📋 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 of network activities
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification
PR.IP-12 - Security patch management
DE.CM-1 - Detection and monitoring of network anomalies
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development and change management
A.12.4.1 - Event logging and monitoring
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates
Requirement 11.2 - Vulnerability scanning