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Vulnerabilities

CVE-2026-7053

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 security flaw has been discovered in Tenda F456 1.0.0.5. This affects the function frmL7ProtForm of the file /goform/L7Prot of the component httpd. Performing a manipulation of the argument page results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

🤖 AI Executive Summary

A critical buffer overflow vulnerability (CVE-2026-7053) exists in Tenda F456 router firmware version 1.0.0.5 affecting the L7 protocol filtering function. With a CVSS score of 8.8 and publicly disclosed exploit code, this vulnerability enables remote code execution without authentication. The lack of available patches creates immediate risk for organizations relying on this router model for network security.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 29, 2026 17:49
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations across multiple sectors: Banking and financial institutions using Tenda routers for branch connectivity face potential network compromise and data exfiltration; Government agencies and NCA-regulated entities risk unauthorized access to classified networks; Telecommunications providers (STC, Mobily, Zain) may experience service disruption and customer data exposure; Healthcare facilities relying on these routers for HIPAA-equivalent compliance face patient data breaches; Energy sector (ARAMCO, SEC) infrastructure connected through affected routers could be compromised. SMEs and government contractors are particularly vulnerable due to widespread Tenda router deployment in cost-conscious deployments.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Telecommunications Healthcare Energy and Utilities Small and Medium Enterprises Education Retail
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F456 devices running firmware 1.0.0.5 in your network using network scanning tools (Nmap, Shodan queries)
2. Isolate affected routers from critical network segments if possible
3. Implement network segmentation to limit router access to trusted administrative networks only
4. Enable router access logs and monitor for suspicious L7Prot parameter manipulation attempts

PATCHING GUIDANCE:
1. Check Tenda's official support portal for firmware updates beyond 1.0.0.5
2. If no patch is available, contact Tenda support for security advisory and timeline
3. Document all affected devices and create replacement procurement plan

COMPENSATING CONTROLS:
1. Deploy Web Application Firewall (WAF) rules to block requests to /goform/L7Prot endpoint
2. Restrict administrative access to router management interfaces via IP whitelisting
3. Implement network-based intrusion detection signatures for buffer overflow attempts
4. Deploy reverse proxy/load balancer in front of router management interfaces
5. Enable router firewall rules to restrict access to management ports (80, 443, 8080)

DETECTION RULES:
1. Monitor for HTTP requests containing oversized 'page' parameters to /goform/L7Prot
2. Alert on unexpected process execution from httpd service
3. Track failed authentication attempts followed by successful command execution
4. Monitor router CPU/memory spikes indicating potential exploitation
5. Log all access to /goform/L7Prot endpoint with full request/response capture
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F456 التي تعمل بالإصدار 1.0.0.5 في شبكتك باستخدام أدوات المسح (Nmap، استعلامات Shodan)
2. عزل أجهزة التوجيه المتأثرة عن قطاعات الشبكة الحرجة إن أمكن
3. تنفيذ تقسيم الشبكة لتحديد وصول جهاز التوجيه للشبكات الإدارية الموثوقة فقط
4. تفعيل سجلات وصول جهاز التوجيه ومراقبة محاولات معالجة معاملات L7Prot المريبة

إرشادات التصحيح:
1. التحقق من بوابة دعم Tenda الرسمية للتحديثات البرمجية بعد الإصدار 1.0.0.5
2. إذا لم يكن هناك تصحيح متاح، اتصل بدعم Tenda للحصول على استشارة أمان والجدول الزمني
3. توثيق جميع الأجهزة المتأثرة وإنشاء خطة شراء الاستبدال

الضوابط البديلة:
1. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحظر الطلبات إلى نقطة نهاية /goform/L7Prot
2. تقييد الوصول الإداري إلى واجهات إدارة جهاز التوجيه عبر القائمة البيضاء للعناوين
3. تنفيذ توقيعات كشف الاختراق القائمة على الشبكة لمحاولات تجاوز المخزن المؤقت
4. نشر وكيل عكسي/موازن تحميل أمام واجهات إدارة جهاز التوجيه
5. تفعيل قواعد جدار حماية جهاز التوجيه لتقييد الوصول إلى منافذ الإدارة (80، 443، 8080)

قواعد الكشف:
1. مراقبة طلبات HTTP التي تحتوي على معاملات 'page' كبيرة الحجم إلى /goform/L7Prot
2. التنبيه على تنفيذ العمليات غير المتوقعة من خدمة httpd
3. تتبع محاولات المصادقة الفاشلة متبوعة بتنفيذ أوامر ناجح
4. مراقبة ارتفاعات CPU/الذاكرة في جهاز التوجيه مما يشير إلى استغلال محتمل
5. تسجيل جميع الوصول إلى نقطة نهاية /goform/L7Prot مع التقاط الطلب/الاستجابة الكاملة
📋 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 Maintenance Security ECC 2024 A.5.1 - Information Security Policies
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management SAMA CSF PR.PT-2 - Protective Technology SAMA CSF DE.CM-1 - Detection Processes SAMA CSF RS.MI-1 - Incident Response Planning
🟡 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 Maintenance
🟣 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 2026-04-26
Source Feed nvd
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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