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Vulnerabilities

CVE-2026-7029

High ⚡ Exploit Available
CWE-119 — Weakness Type
Published: Apr 26, 2026  ·  Modified: May 3, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A weakness has been identified in Tenda F456 1.0.0.5. The impacted element is the function fromaddressNat of the file /goform/addressNat. Executing a manipulation of the argument menufacturer/Go can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

🤖 AI Executive Summary

CVE-2026-7029 is a critical remote buffer overflow vulnerability in Tenda F456 router firmware (version 1.0.0.5) affecting the addressNat function. The vulnerability allows unauthenticated remote attackers to execute arbitrary code by manipulating the 'manufacturer/Go' parameter. With a CVSS score of 8.8 and public exploit availability, this poses an immediate threat to organizations using affected Tenda routers as network perimeter devices.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 27, 2026 12:48
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations across multiple sectors: (1) Banking/SAMA-regulated institutions using Tenda routers for branch connectivity or backup internet links; (2) Government agencies and NCA-supervised entities relying on these devices for network perimeter security; (3) Healthcare facilities using Tenda routers for medical device network segmentation; (4) Energy sector (ARAMCO and utilities) using these devices in operational technology networks; (5) Telecommunications providers and enterprises using Tenda equipment for enterprise connectivity. The lack of authentication requirement and remote exploitability make this particularly dangerous for organizations with internet-facing Tenda devices.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Services Energy and Utilities Telecommunications Enterprise IT Infrastructure
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F456 devices running firmware version 1.0.0.5 in your network using network scanning tools
2. Isolate affected devices from internet-facing positions immediately or implement strict network segmentation
3. Disable remote management features on affected routers via web interface
4. Implement firewall rules to restrict access to port 80/443 on affected devices to trusted networks only

PATCHING GUIDANCE:
1. Check Tenda's official website for firmware updates beyond version 1.0.0.5
2. If no patch is available, plan device replacement with alternative vendors (Cisco, Fortinet, Juniper)
3. Document all affected devices and create replacement timeline

COMPENSATING CONTROLS (if patching delayed):
1. Deploy Web Application Firewall (WAF) rules to block requests containing 'manufacturer/Go' parameters
2. Implement network segmentation to isolate router management interfaces
3. Enable detailed logging on affected devices and forward logs to SIEM
4. Deploy intrusion detection signatures for buffer overflow attempts
5. Implement rate limiting on router web interfaces

DETECTION RULES:
1. Monitor for HTTP requests to /goform/addressNat with 'manufacturer' or 'Go' parameters
2. Alert on unusual process execution from router processes
3. Track failed authentication attempts to router management interfaces
4. Monitor for unexpected outbound connections from router IP addresses
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F456 التي تعمل بإصدار البرنامج الثابت 1.0.0.5 في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن المواضع المواجهة للإنترنت فوراً أو تطبيق تقسيم الشبكة الصارم
3. تعطيل ميزات الإدارة البعيدة على أجهزة التوجيه المتأثرة عبر واجهة الويب
4. تطبيق قواعد جدار الحماية لتقييد الوصول إلى المنافذ 80/443 على الأجهزة المتأثرة للشبكات الموثوقة فقط

إرشادات التصحيح:
1. تحقق من موقع Tenda الرسمي للحصول على تحديثات البرنامج الثابت بعد الإصدار 1.0.0.5
2. إذا لم يكن هناك تصحيح متاح، خطط لاستبدال الجهاز بموردين بدلاء
3. توثيق جميع الأجهزة المتأثرة وإنشاء جدول زمني للاستبدال

الضوابط البديلة:
1. نشر قواعد جدار تطبيقات الويب لحظر الطلبات التي تحتوي على معاملات 'manufacturer/Go'
2. تطبيق تقسيم الشبكة لعزل واجهات إدارة جهاز التوجيه
3. تفعيل السجلات التفصيلية على الأجهزة المتأثرة وإعادة توجيهها إلى SIEM
4. نشر توقيعات كشف الاختراق لمحاولات تجاوز المخزن المؤقت
5. تطبيق تحديد معدل على واجهات إدارة جهاز التوجيه

قواعد الكشف:
1. مراقبة طلبات HTTP إلى /goform/addressNat بمعاملات 'manufacturer' أو 'Go'
2. التنبيه على تنفيذ العمليات غير المعتادة من عمليات جهاز التوجيه
3. تتبع محاولات المصادقة الفاشلة لواجهات إدارة جهاز التوجيه
4. مراقبة الاتصالات الصادرة غير المتوقعة من عناوين IP جهاز التوجيه
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control ECC 2024 A.8.2 - Information Security Perimeter ECC 2024 A.12.6 - Management of Technical Vulnerabilities ECC 2024 A.14.2 - System Development and Change Management
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Physical Devices and Software Assets SAMA CSF PR.AC-1 - Access Control Policy SAMA CSF PR.PT-1 - Protective Technology SAMA CSF DE.CM-1 - Network Monitoring
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Secure development policy ISO 27001:2022 A.8.1 - Asset inventory ISO 27001:2022 A.8.2 - Information security perimeter ISO 27001:2022 A.12.6 - Management of technical vulnerabilities
🟣 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:f456_firmware:1.0.0.5
📊 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 ✓ Yes
Patch ✗ No
Published 2026-04-26
Source Feed nvd
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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