📄 Description (English)
A vulnerability was found in H3C Magic B0 up to 100R002. This affects the function Edit_BasicSSID_5G of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
🤖 AI Executive Summary
A critical buffer overflow vulnerability exists in H3C Magic B0 wireless routers (up to version 100R002) affecting the Edit_BasicSSID_5G function. The vulnerability allows remote attackers to execute arbitrary code by manipulating the 'param' argument in /goform/aspForm requests. With a CVSS score of 8.8 and public exploit availability, this poses an immediate threat to organizations using H3C equipment, particularly in Saudi Arabia's telecom and enterprise sectors.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 27, 2026 17:40
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi telecommunications operators (STC, Mobily, Zain) and enterprise networks using H3C equipment. Government agencies, banking institutions, and healthcare facilities relying on H3C wireless infrastructure for network connectivity face potential compromise. The buffer overflow could enable complete device takeover, allowing attackers to intercept network traffic, establish persistent backdoors, and pivot to internal networks. Energy sector organizations and ARAMCO subsidiaries using H3C equipment in operational technology environments are particularly vulnerable to supply chain attacks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Facilities
Energy and Utilities (ARAMCO subsidiaries)
Enterprise Networks and Large Organizations
Education and Universities
Hospitality and Retail
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all H3C Magic B0 devices in your network using network scanning tools and inventory management systems
2. Isolate affected devices from critical network segments if possible, or implement network segmentation
3. Monitor for suspicious HTTP POST requests to /goform/aspForm with unusual 'param' values
4. Disable remote management interfaces if not required; restrict access via firewall rules to trusted IP ranges only
5. Implement Web Application Firewall (WAF) rules to block requests containing buffer overflow payloads
PATCHING GUIDANCE:
- Contact H3C support immediately for firmware updates (vendor has not responded to disclosure)
- If no patch becomes available within 30 days, consider device replacement with alternative vendors
- Maintain firmware version tracking and establish update procedures
COMPENSATING CONTROLS:
1. Deploy intrusion detection/prevention systems (IDS/IPS) with signatures for CVE-2026-9393
2. Implement strict input validation at network perimeter
3. Use network access control (NAC) to limit device connectivity
4. Enable detailed logging on H3C devices and forward logs to SIEM for analysis
5. Conduct regular vulnerability assessments of wireless infrastructure
DETECTION RULES:
- Monitor for POST requests to /goform/aspForm with 'param' containing null bytes or excessive length
- Alert on HTTP 500 errors from H3C devices following suspicious requests
- Track failed authentication attempts and unusual administrative access patterns
- Implement YARA rules for known buffer overflow payload signatures
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة H3C Magic B0 في شبكتك باستخدام أدوات المسح والمخزون
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة أو تطبيق تقسيم الشبكة
3. مراقبة طلبات HTTP POST المريبة إلى /goform/aspForm بقيم 'param' غير عادية
4. تعطيل واجهات الإدارة البعيدة إذا لم تكن مطلوبة؛ تقييد الوصول عبر قواعد جدار الحماية
5. تطبيق قواعد جدار تطبيقات الويب (WAF) لحجب الطلبات التي تحتوي على حمولات تجاوز المخزن المؤقت
إرشادات التصحيح:
- اتصل بدعم H3C فوراً للحصول على تحديثات البرامج الثابتة
- إذا لم يتوفر تصحيح خلال 30 يوماً، فكر في استبدال الجهاز بموردين بدلاء
- الحفاظ على تتبع إصدار البرنامج الثابت وإنشاء إجراءات التحديث
الضوابط البديلة:
1. نشر أنظمة كشف/منع الاختراق (IDS/IPS) مع توقيعات CVE-2026-9393
2. تطبيق التحقق الصارم من المدخلات على محيط الشبكة
3. استخدام التحكم في الوصول إلى الشبكة (NAC) لتحديد اتصال الجهاز
4. تفعيل السجلات التفصيلية على أجهزة H3C وإعادة توجيهها إلى SIEM
5. إجراء تقييمات الثغرات المنتظمة للبنية التحتية اللاسلكية
قواعد الكشف:
- مراقبة طلبات POST إلى /goform/aspForm التي تحتوي على 'param' بها بايتات فارغة أو طول مفرط
- تنبيه أخطاء HTTP 500 من أجهزة H3C بعد الطلبات المريبة
- تتبع محاولات المصادقة الفاشلة والأنماط غير العادية للوصول الإداري
- تطبيق قواعد YARA لتوقيعات حمولة تجاوز المخزن المؤقت المعروفة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Network security controls and device hardening
ECC 2024 A.5.2.1 - Access control and authentication mechanisms
ECC 2024 A.6.2.1 - Vulnerability management and patch deployment
ECC 2024 A.7.1.1 - Monitoring and logging of security events
🔵 SAMA CSF
SAMA CSF ID.BE-1 - Asset management and inventory
SAMA CSF PR.AC-1 - Access control policies and procedures
SAMA CSF PR.PT-2 - Protective technology deployment
SAMA CSF DE.CM-1 - Detection and monitoring capabilities
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Supplier relationships and third-party risk
ISO 27001:2022 A.8.1 - Asset management and inventory
ISO 27001:2022 A.8.6 - Management of technical vulnerabilities
ISO 27001:2022 A.8.23 - Information security incident management
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and vulnerability management
PCI DSS 11.2 - Vulnerability scanning and assessment
PCI DSS 12.2 - Vendor risk management