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Vulnerabilities

CVE-2026-6016

High
CWE-119 — Weakness Type
Published: Apr 10, 2026  ·  Modified: Apr 17, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A vulnerability was found in Tenda AC9 15.03.02.13. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Performing a manipulation of the argument WANS results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could be used.

🤖 AI Executive Summary

A critical stack-based buffer overflow vulnerability exists in Tenda AC9 routers (firmware 15.03.02.13) affecting the WizardHandle POST request handler. The vulnerability allows remote attackers to execute arbitrary code by manipulating the WANS parameter, with public exploit details 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 05:59
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability directly impacts Saudi telecommunications providers (STC, Mobily, Zain), government agencies using Tenda equipment for network infrastructure, and small-to-medium enterprises relying on Tenda AC9 routers for connectivity. Banking sector organizations using these routers in branch networks face elevated risk of network compromise. Energy sector (ARAMCO subsidiaries) and healthcare facilities utilizing Tenda equipment for network access are particularly vulnerable. The lack of available patches creates persistent risk across all affected sectors.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Government Agencies Banking and Financial Services Energy (ARAMCO) Healthcare Small and Medium Enterprises Education
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda AC9 devices running firmware 15.03.02.13 in your network using network scanning tools
2. Isolate affected devices from critical network segments if possible
3. Implement network segmentation to restrict access to WizardHandle endpoints
4. Monitor for suspicious POST requests to /goform/WizardHandle with WANS parameter manipulation

COMPENSATING CONTROLS (until patch available):
5. Deploy WAF rules to block POST requests containing suspicious WANS parameter values (length > 256 bytes)
6. Restrict administrative access to router management interfaces via IP whitelisting
7. Disable remote management features if not required
8. Implement network-based IDS/IPS signatures detecting buffer overflow attempts
9. Change default credentials on all Tenda devices immediately

DETECTION RULES:
- Monitor for POST requests to /goform/WizardHandle with oversized WANS parameters
- Alert on unexpected process execution from router processes
- Track firmware version inventory and flag 15.03.02.13 instances

PATCHING:
10. Contact Tenda support for firmware updates; check vendor website regularly for patches
11. Prepare upgrade procedure documentation for rapid deployment once patches available
12. Consider replacement with patched Tenda models or alternative vendors if critical infrastructure device
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda AC9 التي تعمل بالإصدار 15.03.02.13 في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن أجزاء الشبكة الحرجة إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى نقاط نهاية WizardHandle
4. مراقبة طلبات POST المريبة إلى /goform/WizardHandle مع التلاعب بمعامل WANS

الضوابط التعويضية (حتى توفر التصحيح):
5. نشر قواعد WAF لحجب طلبات POST التي تحتوي على قيم معامل WANS المريبة (الطول > 256 بايت)
6. تقييد الوصول الإداري إلى واجهات إدارة الموجه عبر قائمة IP البيضاء
7. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
8. تطبيق توقيعات IDS/IPS على مستوى الشبكة للكشف عن محاولات تجاوز المخزن المؤقت
9. تغيير بيانات الاعتماد الافتراضية على جميع أجهزة Tenda فوراً

قواعد الكشف:
- مراقبة طلبات POST إلى /goform/WizardHandle مع معاملات WANS كبيرة الحجم
- تنبيهات عند تنفيذ عمليات غير متوقعة من عمليات الموجه
- تتبع جرد إصدار البرنامج الثابت والإشارة إلى حالات 15.03.02.13

التصحيح:
10. الاتصال بدعم Tenda للحصول على تحديثات البرنامج الثابت؛ التحقق من موقع البائع بانتظام
11. تحضير وثائق إجراء الترقية للنشر السريع عند توفر التصحيحات
12. النظر في الاستبدال بنماذج Tenda المصححة أو بائعين بدلاء للأجهزة الحرجة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures A.8.1.1 - User access management and authentication A.12.2.1 - Change management procedures A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification PR.DS-6 - Data security and integrity controls DE.CM-8 - Vulnerability scanning and management RS.MI-2 - Incident response and containment
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development policy A.12.2.1 - Change management A.13.1.3 - Segregation of networks
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates Requirement 11.2 - Vulnerability scanning Requirement 1.1 - Firewall configuration standards
📊 CVSS Score
8.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score8.8
CWECWE-119
EPSS0.05%
Exploit No
Patch ✗ No
Published 2026-04-10
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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