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Vulnerabilities

CVE-2026-7079

High ⚡ Exploit Available
CWE-119 — Weakness Type
Published: Apr 27, 2026  ·  Modified: May 4, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A weakness has been identified in Tenda F456 1.0.0.5. This affects the function fromAdvSetWan of the file /goform/AdvSetWan of the component httpd. This manipulation of the argument wanmode causes buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

🤖 AI Executive Summary

CVE-2026-7079 is a critical remote buffer overflow vulnerability in Tenda F456 router firmware (version 1.0.0.5) affecting the WAN configuration function. An unauthenticated attacker can exploit this via the wanmode parameter to achieve remote code execution with httpd privileges. With CVSS 8.8 and public exploit availability, this poses immediate risk to organizations using this router model in their network infrastructure.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 30, 2026 11:00
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability directly impacts Saudi organizations across multiple critical sectors: Telecommunications (STC, Mobily, Zain) using Tenda routers in enterprise networks; Banking sector (SAMA-regulated institutions) relying on these devices for branch connectivity; Government agencies (NCA, NCSC oversight) with Tenda equipment in network infrastructure; Healthcare facilities using these routers for patient data networks; Energy sector (ARAMCO, utilities) with industrial network segments. The lack of available patch combined with public exploit code creates immediate risk for unauthorized access, data exfiltration, and lateral movement into internal networks.
🏢 Affected Saudi Sectors
Telecommunications Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Retail and E-commerce Education
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F456 devices running firmware 1.0.0.5 in your network using asset discovery tools
2. Isolate affected devices from critical network segments if possible
3. Implement network segmentation to restrict access to WAN configuration interfaces
4. Monitor for suspicious HTTP requests to /goform/AdvSetWan endpoint

PATCHING GUIDANCE:
1. Check Tenda support portal for firmware updates beyond 1.0.0.5
2. If update available, schedule immediate patching during maintenance windows
3. Test patches in isolated lab environment before production deployment
4. If no patch available, plan device replacement with alternative vendors

COMPENSATING CONTROLS:
1. Implement WAF rules blocking requests to /goform/AdvSetWan with suspicious wanmode parameters
2. Restrict administrative access to router management interfaces via IP whitelisting
3. Disable remote management features if not required
4. Deploy IDS/IPS signatures detecting buffer overflow attempts on port 80/443
5. Implement network access control (NAC) to prevent unauthorized device connections

DETECTION RULES:
1. Monitor HTTP POST requests to /goform/AdvSetWan with wanmode parameter exceeding normal length (>256 bytes)
2. Alert on multiple failed authentication attempts to router admin interface
3. Track unusual process execution from httpd process
4. Monitor for unexpected outbound connections from router IP addresses
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F456 التي تعمل بالإصدار 1.0.0.5 في شبكتك باستخدام أدوات اكتشاف الأصول
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى واجهات إعدادات WAN
4. مراقبة طلبات HTTP المريبة إلى نقطة نهاية /goform/AdvSetWan

إرشادات التصحيح:
1. تحقق من بوابة دعم Tenda للحصول على تحديثات البرامج الثابتة بعد الإصدار 1.0.0.5
2. إذا كان التحديث متاحاً، قم بجدولة التصحيح الفوري خلال نوافذ الصيانة
3. اختبر التصحيحات في بيئة معملية معزولة قبل نشرها في الإنتاج
4. إذا لم يكن التصحيح متاحاً، خطط لاستبدال الجهاز بموردين بدلاء

الضوابط البديلة:
1. تطبيق قواعد WAF لحجب الطلبات إلى /goform/AdvSetWan مع معاملات wanmode مريبة
2. تقييد الوصول الإداري إلى واجهات إدارة جهاز التوجيه عبر قائمة IP البيضاء
3. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
4. نشر توقيعات IDS/IPS للكشف عن محاولات تجاوز المخزن المؤقت على المنافذ 80/443
5. تطبيق التحكم في الوصول إلى الشبكة (NAC) لمنع اتصالات الأجهزة غير المصرح بها

قواعد الكشف:
1. مراقبة طلبات HTTP POST إلى /goform/AdvSetWan مع معامل wanmode يتجاوز الطول الطبيعي (>256 بايت)
2. تنبيه محاولات المصادقة الفاشلة المتعددة لواجهة إدارة جهاز التوجيه
3. تتبع تنفيذ العمليات غير المعتادة من عملية httpd
4. مراقبة الاتصالات الخارجية غير المتوقعة من عناوين IP لجهاز التوجيه
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control ECC 2024 A.12.6 - Management of Technical Vulnerabilities ECC 2024 A.14.2 - System Development and Change Management ECC 2024 A.5.2 - Information Security Policies and Procedures
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management SAMA CSF PR.PT-2 - Security Testing and Vulnerability Management SAMA CSF DE.CM-1 - Detection and Analysis SAMA CSF RS.MI-1 - Incident Response and Recovery
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for Information Security ISO 27001:2022 A.8.1 - Asset Management ISO 27001:2022 A.12.6 - Management of Technical Vulnerabilities ISO 27001:2022 A.14.2 - System Development and Change Management
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security Patches and Updates PCI DSS 11.2 - Vulnerability Scanning PCI DSS 1.1 - Firewall Configuration Standards
📦 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 2026-04-27
Source Feed nvd
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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