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Vulnerabilities

CVE-2026-5352

Medium
A security vulnerability has been detected in Trendnet TEW-657BRM 1.00.1. This impacts the function Edit of the file /setup.cgi. Such manipulation of the argument pcdb_list leads to os command injecti
CWE-77 — Weakness Type
Published: Apr 2, 2026  ·  Modified: Apr 5, 2026  ·  Source: NVD
CVSS v3
6.3
🔗 NVD Official
📄 Description (English)

A security vulnerability has been detected in Trendnet TEW-657BRM 1.00.1. This impacts the function Edit of the file /setup.cgi. Such manipulation of the argument pcdb_list leads to os command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The vendor confirms, that "[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us." This vulnerability only affects products that are no longer supported by the maintainer.

🤖 AI Executive Summary

CVE-2026-5352 is a medium-severity OS command injection vulnerability in the discontinued Trendnet TEW-657BRM router (end-of-life since 2011). The vulnerability exists in the /setup.cgi file's Edit function through the pcdb_list parameter, allowing remote code execution. Since the product has been unsupported for over 14 years and no patch is available, affected organizations must immediately decommission these devices or implement network-level compensating controls.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 18, 2026 15:18
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects legacy network infrastructure in Saudi organizations that may still operate discontinued Trendnet routers in remote or non-critical locations. Most at-risk sectors include: small to medium-sized enterprises (SMEs) in retail and hospitality, government agencies with legacy network equipment, healthcare facilities with older network infrastructure, and telecommunications providers managing legacy customer equipment. The impact is limited due to the product's age and discontinuation, but organizations should audit their network inventory for any remaining devices. Government entities under NCA oversight and financial institutions under SAMA supervision should prioritize removal of such legacy equipment from their networks.
🏢 Affected Saudi Sectors
Small and Medium Enterprises (SMEs) Retail Hospitality Government Agencies Healthcare Telecommunications Education
⚖️ Saudi Risk Score (AI)
4.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Conduct a comprehensive network inventory audit to identify any remaining Trendnet TEW-657BRM devices in your infrastructure
2. Immediately decommission and physically remove all identified devices from the network
3. If immediate removal is not possible, implement the following compensating controls:
- Isolate affected devices on a segregated VLAN with restricted access
- Implement network-level access controls (ACLs) to block all inbound connections to the device's management interface
- Disable remote management capabilities and restrict access to local network only
- Monitor network traffic to/from these devices for suspicious activity
4. Replace with current, supported router models from reputable vendors with active security support
5. Document all legacy equipment removal in your asset management system
6. Implement network segmentation to prevent lateral movement if a device is compromised
Detection Rules:
- Monitor for HTTP POST requests to /setup.cgi with 'pcdb_list' parameter
- Alert on any command execution attempts from router management interfaces
- Track failed authentication attempts to router management consoles
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. إجراء تدقيق شامل لمخزون الشبكة لتحديد أي أجهزة Trendnet TEW-657BRM المتبقية في البنية التحتية
2. إيقاف وإزالة جميع الأجهزة المحددة من الشبكة فوراً
3. إذا لم يكن الإزالة الفورية ممكنة، قم بتطبيق الضوابط التعويضية التالية:
- عزل الأجهزة المتأثرة على شبكة VLAN منفصلة مع وصول مقيد
- تطبيق ضوابط الوصول على مستوى الشبكة (ACLs) لحظر جميع الاتصالات الواردة إلى واجهة إدارة الجهاز
- تعطيل قدرات الإدارة البعيدة وتقييد الوصول إلى الشبكة المحلية فقط
- مراقبة حركة المرور من/إلى هذه الأجهزة للكشف عن النشاط المريب
4. استبدال بنماذج جهاز توجيه حالية ومدعومة من بائعين موثوقين مع دعم أمان نشط
5. توثيق جميع عمليات إزالة المعدات القديمة في نظام إدارة الأصول
6. تطبيق تقسيم الشبكة لمنع الحركة الجانبية في حالة اختراق الجهاز
قواعد الكشف:
- مراقبة طلبات HTTP POST إلى /setup.cgi مع معامل 'pcdb_list'
- تنبيه محاولات تنفيذ الأوامر من واجهات إدارة جهاز التوجيه
- تتبع محاولات المصادقة الفاشلة لأجهزة التوجيه
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.8.1.1 - Asset inventory and management (legacy equipment tracking) A.8.2.1 - Classification of information assets A.8.3.1 - Media handling (secure disposal of legacy equipment) A.13.1.1 - Network security perimeter (network segmentation for legacy devices)
🔵 SAMA CSF
ID.AM-1 - Asset Management (inventory of legacy network devices) PR.AC-1 - Access Control Policy (network access restrictions) PR.AC-3 - Access enforcement (segregation of legacy systems) DE.CM-1 - Detection and Analysis (monitoring legacy device activity)
🟡 ISO 27001:2022
A.5.9 - Inventory of information and other assets A.8.1.1 - Inventory of assets A.8.3.1 - Disposal of assets A.13.1.1 - Network security perimeter
🟣 PCI DSS v4.0.1
Requirement 1.1 - Firewall configuration standards (if router handles payment traffic) Requirement 6.2 - Security patches and updates (legacy equipment management)
📊 CVSS Score
6.3
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityL — Low / Local
IntegrityL — Low / Local
AvailabilityL — Low / Local
📋 Quick Facts
Severity Medium
CVSS Score6.3
CWECWE-77
EPSS0.30%
Exploit No
Patch ✗ No
Published 2026-04-02
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
4.2
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-77
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