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Vulnerabilities

CVE-2026-7099

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 vulnerability was detected in Tenda F456 1.0.0.5. The affected element is the function formQuickIndex of the file /goform/QuickIndex of the component httpd. Performing a manipulation of the argument mit_linktype results in buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

🤖 AI Executive Summary

A critical buffer overflow vulnerability exists in Tenda F456 router firmware version 1.0.0.5 affecting the httpd service's QuickIndex function. The vulnerability allows remote attackers to execute arbitrary code by manipulating the mit_linktype parameter, with public exploits already available. This poses an immediate threat to organizations using this router model for network infrastructure.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 30, 2026 23:49
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability significantly impacts Saudi organizations across multiple sectors: Telecommunications (STC, Mobily, Zain) using Tenda routers in network infrastructure; Banking sector (SAMA-regulated institutions) relying on these devices for branch connectivity; Government agencies (NCA, NCSC oversight) with network perimeter devices; Healthcare facilities using Tenda equipment for hospital networks; Energy sector (ARAMCO, utilities) with industrial network segments. The public exploit availability and lack of patch creates immediate risk for all deployed instances.
🏢 Affected Saudi Sectors
Telecommunications Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities 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
2. Isolate affected devices from critical network segments if possible
3. Implement network-level access controls restricting access to the httpd service (port 80/443)
4. Monitor for exploitation attempts using IDS/IPS signatures detecting buffer overflow patterns

PATCHING GUIDANCE:
1. Check Tenda's official website for firmware updates beyond 1.0.0.5
2. If no patch is available, consider device replacement with alternative vendors
3. Maintain inventory of all Tenda F456 devices for future patch deployment

COMPENSATING CONTROLS:
1. Deploy WAF rules blocking requests with suspicious mit_linktype parameters
2. Implement network segmentation isolating router management interfaces
3. Restrict administrative access to router web interface via IP whitelisting
4. Disable remote management features if not required
5. Monitor httpd service logs for unusual /goform/QuickIndex requests

DETECTION RULES:
1. Alert on POST/GET requests to /goform/QuickIndex with mit_linktype parameter containing special characters or excessive length
2. Monitor for httpd process crashes or unexpected restarts
3. Track failed authentication attempts to router management interface
4. Detect unusual 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 المسح
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة إن أمكن
3. تطبيق عناصر التحكم في الوصول على مستوى الشبكة لتقييد الوصول إلى خدمة httpd
4. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS

إرشادات التصحيح:
1. التحقق من موقع Tenda الرسمي للحصول على تحديثات البرنامج الثابت
2. إذا لم يكن هناك تصحيح متاح، فكر في استبدال الجهاز بموردين بدلاء
3. الحفاظ على جرد جميع أجهزة Tenda F456 لنشر التصحيح المستقبلي

عناصر التحكم التعويضية:
1. نشر قواعد WAF لحظر الطلبات ذات معاملات mit_linktype المريبة
2. تطبيق تقسيم الشبكة لعزل واجهات إدارة جهاز التوجيه
3. تقييد الوصول الإداري إلى واجهة الويب لجهاز التوجيه عبر القائمة البيضاء للعناوين
4. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
5. مراقبة سجلات خدمة httpd للطلبات غير العادية

قواعد الكشف:
1. تنبيه الطلبات إلى /goform/QuickIndex بمعاملات mit_linktype تحتوي على أحرف خاصة
2. مراقبة أعطال عملية httpd أو إعادة التشغيل غير المتوقعة
3. تتبع محاولات المصادقة الفاشلة على واجهة إدارة جهاز التوجيه
4. الكشف عن الاتصالات الخارجية غير العادية 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 - Change Management ECC 2024 A.14.2 - System Development and Maintenance ECC 2024 A.5.1 - Information Security Policies
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Physical Devices and Software Assets SAMA CSF PR.DS-6 - Integrity Checking Mechanisms SAMA CSF DE.CM-1 - Network Monitoring SAMA CSF RS.MI-2 - Incidents are mitigated
🟡 ISO 27001:2022
ISO 27001:2022 A.8.1 - Asset Management ISO 27001:2022 A.12.6 - Change Management ISO 27001:2022 A.14.2 - System Development and Maintenance ISO 27001:2022 A.8.3 - Media Handling
🟣 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
EPSS0.15%
Exploit ✓ Yes
Patch ✗ No
Published 2026-04-27
Source Feed nvd
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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