📄 Description (English)
A vulnerability was identified in Edimax EW-7438RPn 1.28a. Affected by this vulnerability is the function formHwSet of the file /goform/formHwSet of the component POST Request Handler. The manipulation of the argument Anntena/Mcs/regDomain/nic0Addr/nic1Addr/wlanAddr/wanAddr/wlanSSID/wlanChan/comd/initgain/txcck/txofdm leads to command injection. The attack can be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
🤖 AI Executive Summary
CVE-2026-9359 is a command injection vulnerability in Edimax EW-7438RPn wireless router firmware version 1.28a affecting the POST request handler. The vulnerability allows remote attackers to execute arbitrary commands through multiple parameters without authentication. With a CVSS score of 6.3 and publicly available exploit code, this poses a significant risk to organizations using this router model, particularly in Saudi Arabia where Edimax devices are commonly deployed in SMEs and government facilities.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 27, 2026 00:01
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi SMEs, government agencies, educational institutions, and healthcare facilities that deploy Edimax EW-7438RPn routers for network infrastructure. High-risk sectors include: Banking and Financial Services (SAMA-regulated entities using these routers in branch networks), Government agencies (NCA, Ministry of Interior, local administrations), Healthcare providers (MOH facilities, private hospitals), Telecommunications infrastructure (backup/branch connectivity), and Energy sector (ARAMCO contractors). The lack of vendor response and public exploit availability significantly elevates risk for organizations unable to replace affected devices immediately.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare
Energy and Utilities
Telecommunications
Education
Small and Medium Enterprises
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify and inventory all Edimax EW-7438RPn devices running firmware 1.28a 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 router management interfaces (port 80/443) to authorized administrative networks only
4. Change default credentials immediately and enforce strong passwords (minimum 16 characters, mixed case, numbers, special characters)
5. Disable remote management features if not required
COMPENSATING CONTROLS:
6. Deploy Web Application Firewall (WAF) rules to block POST requests to /goform/formHwSet containing suspicious parameter values
7. Implement network segmentation isolating router management traffic
8. Monitor router logs for suspicious POST requests to /goform/formHwSet endpoint
9. Deploy IDS/IPS signatures detecting command injection patterns in HTTP POST parameters
10. Implement rate limiting on router management interfaces
DETECTION RULES:
- Alert on POST requests to /goform/formHwSet with parameters: Anntena, Mcs, regDomain, nic0Addr, nic1Addr, wlanAddr, wanAddr, wlanSSID, wlanChan, comd, initgain, txcck, txofdm containing shell metacharacters (;|&$`()[]{})
- Monitor for unusual process execution originating from router IP addresses
- Track failed authentication attempts to router management interfaces
LONG-TERM STRATEGY:
11. Plan replacement of affected Edimax EW-7438RPn devices with alternative vendors supporting active security updates
12. Establish vendor security update monitoring process
13. Implement firmware version control and automated update mechanisms for future deployments
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد وحصر جميع أجهزة Edimax EW-7438RPn التي تعمل بالإصدار 1.28a في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة إن أمكن
3. تطبيق ضوابط الوصول على مستوى الشبكة لتقييد الوصول إلى واجهات إدارة جهاز التوجيه (المنافذ 80/443) للشبكات الإدارية المصرح بها فقط
4. تغيير بيانات الاعتماد الافتراضية فوراً وفرض كلمات مرور قوية (16 حرفاً على الأقل، أحرف مختلطة، أرقام، أحرف خاصة)
5. تعطيل ميزات الإدارة البعيدة إذا لم تكن مطلوبة
الضوابط البديلة:
6. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحجب طلبات POST إلى /goform/formHwSet التي تحتوي على قيم معاملات مريبة
7. تطبيق تقسيم الشبكة لعزل حركة إدارة جهاز التوجيه
8. مراقبة سجلات جهاز التوجيه للكشف عن طلبات POST المريبة إلى نقطة النهاية /goform/formHwSet
9. نشر توقيعات IDS/IPS للكشف عن أنماط حقن الأوامر في معاملات HTTP POST
10. تطبيق تحديد معدل على واجهات إدارة جهاز التوجيه
قواعد الكشف:
- تنبيهات على طلبات POST إلى /goform/formHwSet تحتوي على معاملات تحتوي على أحرف shell (;|&$`()[]{})
- مراقبة تنفيذ العمليات غير العادية من عناوين IP جهاز التوجيه
- تتبع محاولات المصادقة الفاشلة على واجهات إدارة جهاز التوجيه
الاستراتيجية طويلة الأجل:
11. التخطيط لاستبدال أجهزة Edimax EW-7438RPn المتأثرة بموردين بدائل يدعمون تحديثات الأمان النشطة
12. إنشاء عملية مراقبة تحديثات أمان الموردين
13. تطبيق التحكم في إصدار البرامج الثابتة وآليات التحديث الآلية للنشرات المستقبلية
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control (device identification and tracking)
ECC 2024 A.8.2 - Configuration Management (secure configuration of network devices)
ECC 2024 A.13.1 - Network Security (network segmentation and access controls)
ECC 2024 A.14.2 - System Development and Maintenance (vulnerability management and patching)
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management (inventory of network infrastructure)
SAMA CSF PR.AC-1 - Access Control (authentication and authorization)
SAMA CSF PR.DS-1 - Data Security (protection of management interfaces)
SAMA CSF DE.CM-1 - Detection and Analysis (monitoring for suspicious activities)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.9 - Access Control (restricting access to management interfaces)
ISO 27001:2022 A.8.1 - Asset Management (inventory and control of network devices)
ISO 27001:2022 A.8.2 - Configuration Management (secure configuration baselines)
ISO 27001:2022 A.8.6 - Management of Technical Vulnerabilities (vulnerability assessment and remediation)
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall Configuration Standards (network segmentation)
PCI DSS 2.1 - Default Passwords (credential management)
PCI DSS 6.2 - Security Patches (vulnerability management)
PCI DSS 11.2 - Vulnerability Scanning (regular security assessments)