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Vulnerabilities

CVE-2026-4552

High
A vulnerability was determined in Tenda F453 1.0.0.3. This issue affects the function fromVirtualSer of the file /goform/VirtualSer of the component Parameters Handler. Executing a manipulation of the
CWE-119 — Weakness Type
Published: Mar 22, 2026  ·  Modified: Mar 29, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A vulnerability was determined in Tenda F453 1.0.0.3. This issue affects the function fromVirtualSer of the file /goform/VirtualSer of the component Parameters Handler. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.

🤖 AI Executive Summary

A critical stack-based buffer overflow vulnerability exists in Tenda F453 router firmware (version 1.0.0.3) affecting the VirtualSer parameter handler. Remote attackers can exploit this via the 'page' parameter to achieve code execution without authentication. With CVSS 8.8 and public disclosure, this poses immediate risk to organizations using this router model for network access and perimeter security.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 11:52
🇸🇦 Saudi Arabia Impact Assessment
High impact for Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using Tenda F453 routers for network infrastructure. Banking sector (SAMA-regulated institutions) at risk if routers used in branch networks or remote access solutions. Healthcare facilities and critical infrastructure operators using this model face potential network compromise and data exfiltration. Small-to-medium enterprises across all sectors represent significant exposure given Tenda's market penetration in Saudi Arabia.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Small and Medium Enterprises Education
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F453 devices in your network using asset discovery tools
2. Isolate affected routers from critical network segments if possible
3. Implement network segmentation to limit lateral movement from compromised devices
4. Enable enhanced logging on network perimeter devices

PATCHING GUIDANCE:
1. Contact Tenda support for firmware updates (no patch currently available - monitor vendor advisories)
2. If no patch available within 30 days, plan device replacement
3. Maintain inventory of affected devices with serial numbers and firmware versions

COMPENSATING CONTROLS:
1. Restrict administrative access to router management interfaces (disable remote management)
2. Implement strict firewall rules limiting access to /goform/VirtualSer endpoint
3. Deploy Web Application Firewall (WAF) rules to detect buffer overflow attempts in 'page' parameter
4. Monitor for suspicious parameter values exceeding normal length thresholds
5. Implement network intrusion detection signatures for CVE-2026-4552 exploitation attempts

DETECTION RULES:
1. Alert on HTTP POST requests to /goform/VirtualSer with 'page' parameter > 256 bytes
2. Monitor for unusual process execution originating from router management processes
3. Track failed authentication attempts followed by parameter manipulation attempts
4. Log all access to router web interface with source IP and parameter values
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F453 في شبكتك باستخدام أدوات اكتشاف الأصول
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة إن أمكن
3. تنفيذ تقسيم الشبكة لتحديد الحركة الجانبية من الأجهزة المخترقة
4. تفعيل السجلات المحسنة على أجهزة محيط الشبكة

إرشادات التصحيح:
1. الاتصال بدعم Tenda للحصول على تحديثات البرامج الثابتة (لا يوجد تصحيح متاح حالياً)
2. إذا لم يتوفر تصحيح خلال 30 يوماً، خطط لاستبدال الجهاز
3. الحفاظ على قائمة جرد بالأجهزة المتأثرة مع أرقام التسلسل وإصدارات البرامج الثابتة

الضوابط البديلة:
1. تقييد الوصول الإداري إلى واجهات إدارة جهاز التوجيه (تعطيل الإدارة البعيدة)
2. تنفيذ قواعد جدار الحماية الصارمة لتحديد الوصول إلى نقطة نهاية /goform/VirtualSer
3. نشر قواعد جدار تطبيقات الويب للكشف عن محاولات تجاوز المخزن المؤقت
4. مراقبة قيم المعاملات المريبة التي تتجاوز حدود الطول الطبيعية
5. تنفيذ توقيعات كشف الاختراق في الشبكة

قواعد الكشف:
1. تنبيه طلبات HTTP POST إلى /goform/VirtualSer مع معامل 'page' > 256 بايت
2. مراقبة تنفيذ العمليات غير العادية من عمليات إدارة جهاز التوجيه
3. تتبع محاولات المصادقة الفاشلة متبوعة بمحاولات معالجة المعاملات
4. تسجيل جميع الوصول إلى واجهة الويب لجهاز التوجيه مع عنوان IP المصدر وقيم المعاملات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures A.8.1.1 - User access management A.8.2.1 - User registration and de-registration A.12.2.1 - Change management procedures A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset management and criticality assessment PR.DS-1 - Data security and protection PR.IP-1 - Security patch management DE.CM-1 - Detection and monitoring RS.RP-1 - Response planning
🟡 ISO 27001:2022
A.5.1 - Management direction for information security A.8.1 - User access management A.12.2 - Change management A.12.6 - Management of technical vulnerabilities A.14.2 - Development and support processes
🟣 PCI DSS v4.0.1
Requirement 1.1 - Firewall configuration standards Requirement 6.2 - Security patches and updates Requirement 11.2 - Vulnerability scanning
📊 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
Exploit No
Patch ✗ No
Published 2026-03-22
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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