📄 Description (English)
A vulnerability was found in Tenda AC10 16.03.10.10_multi_TDE01. Affected by this vulnerability is the function fromSysToolChangePwd of the file /bin/httpd. Performing a manipulation of the argument sys.userpass results in stack-based buffer overflow. The attack can be initiated remotely.
🤖 AI Executive Summary
A critical stack-based buffer overflow vulnerability exists in Tenda AC10 router firmware (version 16.03.10.10_multi_TDE01) affecting the password change function in httpd. The vulnerability allows remote attackers to execute arbitrary code by manipulating the sys.userpass parameter, with no patch currently available. This poses significant risk to Saudi organizations relying on Tenda networking equipment for critical infrastructure connectivity.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 18:08
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using Tenda AC10 routers for network infrastructure. Banking sector (SAMA-regulated institutions) at risk if routers used in branch connectivity or VPN termination points. Healthcare facilities and energy sector (ARAMCO, SEC) vulnerable if Tenda equipment deployed in operational networks. Small-to-medium enterprises across all sectors heavily affected due to widespread Tenda router adoption in Saudi market. Remote code execution capability enables lateral movement into critical systems.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services (SAMA-regulated)
Government and Public Administration (NCA, Ministry of Interior)
Healthcare (MOH facilities)
Energy and Utilities (ARAMCO, SEC)
Small and Medium Enterprises (SMEs)
Education (Universities, Schools)
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
T1190 - Exploit Public-Facing Application (httpd remote access)
T1068 - Exploitation for Privilege Escalation (buffer overflow to RCE)
T1543 - Create or Modify System Process (code execution via overflow)
T1021 - Remote Services (router management interface)
T1078 - Valid Accounts (credential manipulation via sys.userpass)
T1059 - Command and Scripting Interpreter (post-exploitation code execution)
T1570 - Lateral Tool Transfer (using compromised router for network access)
⚖️ Saudi Risk Score (AI)
8.6
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda AC10 devices running firmware 16.03.10.10_multi_TDE01 in your network using network scanning tools
2. Isolate affected routers from production networks or restrict administrative access to trusted networks only
3. Disable remote management features (disable WAN-side access to httpd admin interface)
4. Change all router administrative credentials immediately
5. Monitor for suspicious authentication attempts and unauthorized configuration changes
COMPENSATING CONTROLS (until patch available):
6. Implement network segmentation - place routers behind firewall with strict ACLs
7. Deploy IDS/IPS rules to detect buffer overflow attempts targeting /bin/httpd
8. Block external access to router management ports (80, 443, 8080) at perimeter
9. Enable logging on all router administrative activities
10. Consider replacing Tenda AC10 with alternative vendors (TP-Link, Cisco, Huawei) that have active security support
DETECTION RULES:
- Monitor for POST requests to /bin/httpd with sys.userpass parameter containing unusual character sequences
- Alert on stack overflow patterns: repeated 0x41 (A) characters or NOP sleds in HTTP parameters
- Track failed authentication attempts followed by successful access
- Monitor for unexpected process execution from httpd daemon
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda AC10 التي تعمل بالإصدار 16.03.10.10_multi_TDE01 في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن شبكات الإنتاج أو تقييد الوصول الإداري للشبكات الموثوقة فقط
3. تعطيل ميزات الإدارة البعيدة (تعطيل الوصول من جانب WAN إلى واجهة httpd الإدارية)
4. تغيير جميع بيانات اعتماد المسؤول للموجه فوراً
5. مراقبة محاولات المصادقة المريبة والتغييرات غير المصرح بها في الإعدادات
الضوابط البديلة (حتى توفر التصحيح):
6. تنفيذ تقسيم الشبكة - ضع الموجهات خلف جدار الحماية مع قوائم التحكم في الوصول الصارمة
7. نشر قواعد IDS/IPS للكشف عن محاولات تجاوز المخزن المؤقت التي تستهدف /bin/httpd
8. حظر الوصول الخارجي إلى منافذ إدارة الموجه (80، 443، 8080) على محيط الشبكة
9. تفعيل تسجيل جميع أنشطة الإدارة على الموجه
10. النظر في استبدال Tenda AC10 بموردين بدائل (TP-Link، Cisco، Huawei) يتمتعون بدعم أمان نشط
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information Security Policies (router security management)
ECC 2024 A.5.2.1 - Access Control (administrative access restrictions)
ECC 2024 A.5.3.1 - Cryptography (secure management channel enforcement)
ECC 2024 A.5.4.1 - Physical and Environmental Security (network infrastructure protection)
ECC 2024 A.5.5.1 - Operations Security (vulnerability management and patching)
🔵 SAMA CSF
SAMA CSF ID.GV-1 - Organizational context and governance
SAMA CSF PR.AC-1 - Access control and authentication
SAMA CSF PR.PT-1 - Protection processes and procedures
SAMA CSF DE.CM-1 - Detection and monitoring
SAMA CSF RS.RP-1 - Response planning
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Supplier relationships
ISO 27001:2022 A.5.16 - Information security in supplier relationships
ISO 27001:2022 A.5.18 - Management of information security incidents
ISO 27001:2022 A.6.2 - Internal organization
ISO 27001:2022 A.8.1 - User endpoint devices
ISO 27001:2022 A.8.2 - Privileged access rights
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall configuration standards
PCI DSS 1.2 - Router configuration and security
PCI DSS 2.1 - Default security parameters
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning
🔗 References & Sources 5