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Vulnerabilities

CVE-2026-5684

High
CWE-119 — Weakness Type
Published: Apr 6, 2026  ·  Modified: Apr 13, 2026  ·  Source: NVD
CVSS v3
8.0
🔗 NVD Official
📄 Description (English)

A vulnerability was determined in Tenda CX12L 16.03.53.12. Affected by this issue is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack requires access to the local network. The exploit has been publicly disclosed and may be utilized.

🤖 AI Executive Summary

A stack-based buffer overflow vulnerability exists in Tenda CX12L router firmware version 16.03.53.12 affecting the webExcptypemanFilter function. The vulnerability can be exploited through manipulation of the 'page' parameter by attackers with local network access, potentially leading to remote code execution. With CVSS 8.0 and public disclosure, this poses significant risk to organizations using Tenda networking equipment across Saudi Arabia.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 26, 2026 14:48
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations in telecommunications (STC, Mobily, Zain), banking sector infrastructure, government agencies, and healthcare facilities that utilize Tenda CX12L routers for network connectivity. Small and medium enterprises (SMEs) across all sectors are particularly vulnerable due to widespread adoption of budget-friendly Tenda equipment. The local network requirement limits exposure but remains critical for internal network security, especially in organizations with inadequate network segmentation. Energy sector (ARAMCO subsidiaries) and financial institutions relying on these routers for branch connectivity face elevated risk of unauthorized access and data exfiltration.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Banking and Financial Services Government and Public Administration Healthcare Energy (ARAMCO and subsidiaries) Small and Medium Enterprises (SMEs) Retail and E-commerce
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda CX12L devices running firmware 16.03.53.12 in your network inventory
2. Isolate affected routers from critical systems if possible, or implement strict network access controls
3. Monitor network traffic for suspicious activity targeting the /goform/webExcptypemanFilter endpoint
4. Restrict local network access to router management interfaces using firewall rules
5. Change default router credentials immediately and enforce strong authentication

PATCHING GUIDANCE:
- Contact Tenda support for firmware updates beyond 16.03.53.12
- If no patch is available from vendor, plan device replacement with alternative vendors
- Test any firmware updates in isolated lab environment before production deployment

COMPENSATING CONTROLS:
- Implement network segmentation to isolate router management traffic
- Deploy intrusion detection/prevention systems (IDS/IPS) to monitor for buffer overflow exploitation attempts
- Enable router logging and forward logs to centralized SIEM for analysis
- Implement MAC filtering and disable remote management features
- Deploy Web Application Firewall (WAF) rules to block malformed requests to /goform/webExcptypemanFilter

DETECTION RULES:
- Monitor HTTP POST requests to /goform/webExcptypemanFilter with oversized 'page' parameter values
- Alert on any stack trace errors or unexpected router reboots
- Track failed authentication attempts to router management interface
- Monitor for unusual process execution on router with elevated privileges
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda CX12L التي تعمل بالإصدار 16.03.53.12 في جرد الشبكة الخاص بك
2. عزل الأجهزة المتأثرة عن الأنظمة الحرجة إن أمكن، أو تطبيق ضوابط وصول صارمة للشبكة
3. مراقبة حركة المرور على الشبكة للنشاط المريب الموجه نحو نقطة نهاية /goform/webExcptypemanFilter
4. تقييد الوصول إلى واجهات إدارة الموجه من الشبكة المحلية باستخدام قواعد جدار الحماية
5. تغيير بيانات اعتماد الموجه الافتراضية فوراً وفرض المصادقة القوية

إرشادات التصحيح:
- الاتصال بدعم Tenda للحصول على تحديثات البرامج الثابتة بعد الإصدار 16.03.53.12
- إذا لم يكن هناك تصحيح متاح من البائع، خطط لاستبدال الجهاز ببدائل أخرى
- اختبر أي تحديثات برامج ثابتة في بيئة معملية معزولة قبل النشر في الإنتاج

الضوابط البديلة:
- تطبيق تقسيم الشبكة لعزل حركة مرور إدارة الموجه
- نشر أنظمة كشف/منع الاختراق (IDS/IPS) لمراقبة محاولات استغلال تجاوز السعة
- تفعيل تسجيل الموجه وإعادة توجيه السجلات إلى SIEM مركزي للتحليل
- تطبيق تصفية عناوين MAC وتعطيل ميزات الإدارة البعيدة
- نشر قواعد جدار تطبيقات الويب (WAF) لحظر الطلبات المشوهة إلى /goform/webExcptypemanFilter

قواعد الكشف:
- مراقبة طلبات HTTP POST إلى /goform/webExcptypemanFilter بقيم معامل 'page' كبيرة الحجم
- التنبيه على أي أخطاء تتبع المكدس أو إعادة تشغيل الموجه غير المتوقعة
- تتبع محاولات المصادقة الفاشلة لواجهة إدارة الموجه
- مراقبة تنفيذ العمليات غير العادية على الموجه بامتيازات مرتفعة
📋 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 access
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification PR.IP-12 - Security patches and updates 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.12.2.1 - Monitoring and logging of network access
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches for system components Requirement 11.2 - Vulnerability scanning and assessment
📊 CVSS Score
8.0
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorA — Adjacent
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 Score8.0
CWECWE-119
EPSS0.03%
Exploit No
Patch ✗ No
Published 2026-04-06
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-119
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