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Vulnerabilities

CVE-2026-2909

High ⚡ Exploit Available
A vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pin
CWE-119 — Weakness Type
Published: Feb 22, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pingAddr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

🤖 AI Executive Summary

A critical stack-based buffer overflow vulnerability exists in Tenda HG9 router firmware (version 300001138) affecting the diagnostic ping endpoint. The vulnerability allows remote attackers to execute arbitrary code by manipulating the pingAddr parameter, with public exploits already 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 01:04
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using Tenda HG9 routers for network infrastructure. Banking sector (SAMA-regulated institutions) at risk if routers used in branch connectivity or VPN endpoints. 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.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Banking and Financial Services (SAMA-regulated) Government and Public Administration Healthcare Energy and Utilities (ARAMCO, SEC) Small and Medium Enterprises Education
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda HG9 devices (firmware 300001138) in your network using asset discovery tools
2. Isolate affected routers from critical network segments if patching cannot be completed within 24 hours
3. Disable remote management and diagnostic features on affected devices immediately
4. Monitor for suspicious ping requests to router management interfaces

PATCHING:
1. Apply latest Tenda HG9 firmware update from official Tenda support portal
2. Verify firmware version post-update to confirm patch application
3. Reset router to factory defaults after patching and reconfigure security settings
4. Test connectivity and VPN functionality post-patch

COMPENSATING CONTROLS (if patch unavailable):
1. Implement network segmentation - restrict access to router management interfaces to authorized IPs only
2. Deploy WAF/IPS rules blocking malformed ping requests to /boaform/formPing endpoint
3. Disable ICMP ping responses on affected routers
4. Implement strict ingress filtering on router management ports (typically 80, 443, 8080)
5. Monitor router logs for exploitation attempts

DETECTION RULES:
1. Alert on HTTP POST requests to /boaform/formPing with oversized pingAddr parameters (>256 bytes)
2. Monitor for stack overflow indicators: unusual process behavior, memory access violations on router
3. Track failed authentication attempts to router management interface
4. Log all diagnostic ping endpoint access with parameter values
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda HG9 (الإصدار 300001138) في شبكتك باستخدام أدوات اكتشاف الأصول
2. عزل الأجهزة المتأثرة عن قطاعات الشبكة الحرجة إذا لم يتمكن من تطبيق التصحيح خلال 24 ساعة
3. تعطيل الإدارة البعيدة والميزات التشخيصية على الأجهزة المتأثرة فوراً
4. مراقبة طلبات ping المريبة إلى واجهات إدارة الموجه

تطبيق التصحيحات:
1. تطبيق أحدث تحديث لثfirmware Tenda HG9 من بوابة دعم Tenda الرسمية
2. التحقق من إصدار البرنامج الثابت بعد التحديث لتأكيد تطبيق التصحيح
3. إعادة تعيين الموجه إلى إعدادات المصنع بعد التصحيح وإعادة تكوين إعدادات الأمان
4. اختبار الاتصال وعمل VPN بعد التصحيح

الضوابط البديلة (إذا لم يتوفر التصحيح):
1. تطبيق تقسيم الشبكة - تقييد الوصول إلى واجهات إدارة الموجه إلى عناوين IP مصرح بها فقط
2. نشر قواعد WAF/IPS لحجب طلبات ping المشوهة إلى نقطة النهاية /boaform/formPing
3. تعطيل استجابات ICMP ping على الأجهزة المتأثرة
4. تطبيق تصفية صارمة للدخول على منافذ إدارة الموجه (عادة 80، 443، 8080)
5. مراقبة سجلات الموجه لمحاولات الاستغلال

قواعد الكشف:
1. تنبيه على طلبات HTTP POST إلى /boaform/formPing مع معاملات pingAddr كبيرة الحجم (>256 بايت)
2. مراقبة مؤشرات تجاوز المكدس: سلوك العملية غير المعتاد، انتهاكات الوصول إلى الذاكرة على الموجه
3. تتبع محاولات المصادقة الفاشلة لواجهة إدارة الموجه
4. تسجيل جميع عمليات الوصول إلى نقطة نهاية ping التشخيصية مع قيم المعاملات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control ECC 2024 A.12.6 - Change Management ECC 2024 A.14.2 - System Development and Maintenance ECC 2024 A.16.1 - Information Security Incident Management
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Physical and Cyber Assets SAMA CSF PR.IP-3 - Configuration Management SAMA CSF DE.CM-1 - Network Monitoring SAMA CSF RS.MI-1 - Incident Response Planning
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Inventory of Information and Other Assets ISO 27001:2022 A.8.1 - Information Security Policies ISO 27001:2022 A.8.2 - Information Security Roles and Responsibilities ISO 27001:2022 A.14.2 - System Development, Maintenance and Management
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall Configuration Standards PCI DSS 6.2 - Security Patches and Updates PCI DSS 11.2 - Vulnerability Scanning
📦 Affected Products / CPE 1 entries
tenda:hg9_firmware:300001138
📊 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 ✓ Yes
Published 2026-02-22
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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