📄 Description (English)
When SSL profiles are configured on a virtual server, undisclosed traffic can cause the virtual server to stop processing new client connections. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
🤖 AI Executive Summary
CVE-2026-40629 is a high-severity denial-of-service vulnerability affecting SSL-configured virtual servers that can cause service interruption when processing undisclosed traffic. The vulnerability has a CVSS score of 7.5 and exploits resource exhaustion mechanisms (CWE-770), making it a significant threat to organizations relying on SSL-terminated services. Currently, no patch is available, requiring immediate implementation of compensating controls and monitoring strategies.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 20, 2026 15:02
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), and telecommunications providers (STC, Mobily) that heavily rely on SSL-terminated virtual servers for secure client connections. Energy sector (ARAMCO, SEC) and healthcare organizations using load balancers with SSL profiles are also at elevated risk. The DoS impact could disrupt critical financial transactions, government services, and essential infrastructure operations during peak traffic periods.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Telecommunications
Energy and Utilities
Healthcare
E-commerce and Retail
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all virtual servers with SSL profiles across your infrastructure
2. Implement rate limiting and connection throttling on SSL-configured virtual servers
3. Deploy traffic filtering rules to identify and block malformed or undisclosed traffic patterns
4. Enable detailed logging of SSL connection attempts and failures
COMPENSATING CONTROLS:
1. Configure connection limits per source IP to prevent resource exhaustion
2. Implement WAF/DDoS mitigation rules to filter suspicious traffic before reaching virtual servers
3. Deploy health checks with automatic failover to redundant SSL endpoints
4. Use traffic shaping to limit concurrent SSL connections
DETECTION RULES:
1. Alert on sudden spike in SSL connection rejections or timeouts
2. Monitor for patterns of incomplete SSL handshakes from single sources
3. Track virtual server CPU/memory spikes correlating with SSL traffic anomalies
4. Log and analyze traffic with unusual packet structures or malformed SSL records
MONITORING:
1. Establish baseline metrics for SSL connection success rates
2. Set alerts for >20% increase in SSL connection failures
3. Implement real-time alerting for virtual server becoming unresponsive
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع الخوادم الافتراضية مع ملفات تعريف SSL عبر البنية التحتية
2. تطبيق تحديد معدل الاتصال على الخوادم الافتراضية المزودة بـ SSL
3. نشر قواعد تصفية حركة المرور لتحديد وحجب أنماط حركة المرور غير المحددة
4. تفعيل تسجيل مفصل لمحاولات واتصالات SSL
الضوابط البديلة:
1. تكوين حدود الاتصال لكل عنوان IP مصدر
2. تطبيق قواعد تخفيف DDoS/WAF قبل وصول حركة المرور إلى الخوادم
3. نشر فحوصات صحية مع الفشل التلقائي إلى نقاط نهاية SSL احتياطية
4. استخدام تشكيل حركة المرور لتحديد اتصالات SSL المتزامنة
قواعد الكشف:
1. تنبيهات عند حدوث ارتفاع مفاجئ في رفض أو انقطاع اتصالات SSL
2. مراقبة أنماط مصافحات SSL غير المكتملة من مصادر واحدة
3. تتبع ارتفاعات CPU/الذاكرة للخادم الافتراضي المرتبطة بشذوذ حركة SSL
4. تسجيل وتحليل حركة المرور ذات الهياكل غير العادية أو سجلات SSL المشوهة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.12.2.1 - Change management procedures
ECC 2024 A.8.2.3 - User access management and monitoring
🔵 SAMA CSF
SAMA CSF ID.BE-5 - Organizational resilience objectives
SAMA CSF PR.DS-6 - Integrity checking mechanisms
SAMA CSF DE.CM-1 - Network monitoring and anomaly detection
🟡 ISO 27001:2022
ISO 27001:2022 A.12.2.1 - Change management
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
ISO 27001:2022 A.8.2.1 - User registration and de-registration
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning and assessment
🔗 References & Sources 1