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Vulnerabilities

CVE-2026-5046

High ⚡ Exploit Available
A flaw has been found in Tenda FH1201 1.2.0.14(408). Affected is the function formWrlExtraSet of the file /goform/WrlExtraSet of the component Parameter Handler. Executing a manipulation of the argume
CWE-119 — Weakness Type
Published: Mar 29, 2026  ·  Modified: Apr 5, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A flaw has been found in Tenda FH1201 1.2.0.14(408). Affected is the function formWrlExtraSet of the file /goform/WrlExtraSet of the component Parameter Handler. Executing a manipulation of the argument GO can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.

🤖 AI Executive Summary

A critical stack-based buffer overflow vulnerability exists in Tenda FH1201 firmware version 1.2.0.14(408) affecting the WrlExtraSet parameter handler. The flaw allows remote attackers to execute arbitrary code by manipulating the GO argument, with public exploits already available. This poses immediate risk to organizations using Tenda networking equipment across Saudi Arabia's critical infrastructure.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 13:59
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using Tenda networking equipment for branch connectivity. Banking sector (SAMA-regulated institutions) at risk if Tenda routers deployed in branch networks. Healthcare facilities and energy sector (ARAMCO) potentially affected if using affected Tenda FH1201 models. Small-to-medium enterprises across Saudi Arabia heavily rely on Tenda equipment, making this a widespread vulnerability. Remote code execution capability enables lateral movement into critical networks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Small and Medium Enterprises
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda FH1201 devices running firmware 1.2.0.14(408) 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 WrlExtraSet endpoints
4. Monitor for exploitation attempts using IDS/IPS signatures

PATCHING GUIDANCE:
1. Check Tenda's official website for firmware updates beyond 1.2.0.14(408)
2. If no patch available, contact Tenda support for security advisory
3. Plan firmware upgrade testing in isolated lab environment first
4. Schedule maintenance window for device updates

COMPENSATING CONTROLS (if patch unavailable):
1. Implement firewall rules to restrict access to /goform/WrlExtraSet endpoint
2. Disable remote management features if not required
3. Change default credentials and implement strong authentication
4. Deploy WAF rules to filter malicious GO parameter values
5. Implement network-based IPS signatures for buffer overflow attempts

DETECTION RULES:
1. Monitor HTTP POST requests to /goform/WrlExtraSet with oversized GO parameters
2. Alert on unusual process execution from Tenda device processes
3. Track firmware version changes on Tenda devices
4. Monitor for stack corruption indicators in device logs
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda FH1201 التي تعمل بالإصدار 1.2.0.14(408) في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن قطاعات الشبكة الحرجة إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى نقاط نهاية WrlExtraSet
4. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS

إرشادات التصحيح:
1. تحقق من موقع Tenda الرسمي للحصول على تحديثات البرنامج الثابت بعد 1.2.0.14(408)
2. إذا لم يكن هناك تصحيح متاح، اتصل بدعم Tenda للحصول على استشارة أمان
3. خطط لاختبار ترقية البرنامج الثابت في بيئة معملية معزولة أولاً
4. جدولة نافذة صيانة لتحديثات الجهاز

الضوابط البديلة (إذا لم يكن التصحيح متاحاً):
1. تطبيق قواعد جدار الحماية لتقييد الوصول إلى نقطة نهاية /goform/WrlExtraSet
2. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
3. تغيير بيانات الاعتماد الافتراضية وتطبيق المصادقة القوية
4. نشر قواعد WAF لتصفية قيم معاملات GO الضارة
5. تطبيق توقيعات IPS المستندة إلى الشبكة لمحاولات تجاوز المخزن المؤقت

قواعد الكشف:
1. مراقبة طلبات HTTP POST إلى /goform/WrlExtraSet بمعاملات GO كبيرة الحجم
2. التنبيه على تنفيذ العمليات غير المعتادة من عمليات جهاز Tenda
3. تتبع تغييرات إصدار البرنامج الثابت على أجهزة Tenda
4. مراقبة مؤشرات تلف المكدس في سجلات الجهاز
📋 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 access
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management and Vulnerability Management SAMA CSF PR.IP-12 - Security patch management SAMA CSF DE.CM-1 - Detection and monitoring systems
🟡 ISO 27001:2022
ISO 27001:2022 A.12.3.1 - Segregation of networks ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Secure development and change management
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates PCI DSS 11.2 - Vulnerability scanning
📦 Affected Products / CPE 1 entries
tenda:fh1201_firmware:1.2.0.14\(408\)
📊 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
EPSS0.08%
Exploit ✓ Yes
Patch ✗ No
Published 2026-03-29
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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