📄 Description (English)
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.
🤖 AI Executive Summary
A null pointer dereference vulnerability in Windows TCP/IP stack affects Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025, enabling remote denial of service attacks without authentication. With a CVSS score of 7.5 and no patch currently available, this poses significant risk to Saudi organizations relying on these systems. The vulnerability requires network access but no user interaction, making it exploitable at scale once proof-of-concept code emerges.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 19, 2026 06:19
🇸🇦 Saudi Arabia Impact Assessment
Critical impact on Saudi government entities (NCA, CITC), banking sector (SAMA-regulated institutions, major banks), healthcare systems (MOH facilities), energy sector (ARAMCO, SEC), and telecommunications (STC, Mobily). Windows Server 2025 deployments in data centers and cloud infrastructure are particularly vulnerable. DoS attacks could disrupt critical services, financial transactions, and government operations. The lack of available patches creates extended exposure window.
🏢 Affected Saudi Sectors
Government (NCA, CITC, Ministry of Interior)
Banking and Financial Services (SAMA, commercial banks)
Healthcare (Ministry of Health, hospitals)
Energy (ARAMCO, SEC)
Telecommunications (STC, Mobily, Zain)
Critical Infrastructure
Data Centers and Cloud Providers
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025 systems across your organization
2. Prioritize critical infrastructure and customer-facing systems for mitigation
3. Enable network segmentation to restrict TCP/IP traffic to trusted sources only
4. Implement rate limiting and connection throttling on network perimeter devices
5. Deploy network-based DoS detection signatures targeting malformed TCP/IP packets
COMPENSATING CONTROLS (until patch available):
6. Configure Windows Firewall to block suspicious TCP/IP traffic patterns
7. Implement network access control (NAC) to restrict device connectivity
8. Deploy intrusion prevention systems (IPS) with rules for TCP/IP anomalies
9. Monitor network traffic for unusual packet patterns or connection floods
10. Establish incident response procedures for DoS events
DETECTION RULES:
- Monitor for sudden increases in TCP connection resets or timeouts
- Alert on malformed TCP/IP packets from external sources
- Track system crashes or service restarts on affected Windows versions
- Log failed TCP/IP stack operations in Event Viewer (System logs)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع أنظمة Windows 11 و Windows Server 2025 في المنظمة
2. تحديد أولويات البنية التحتية الحرجة والأنظمة الموجهة للعملاء
3. تفعيل تقسيم الشبكة لتقييد حركة TCP/IP من المصادر الموثوقة فقط
4. تطبيق تحديد معدل الاتصال على أجهزة محيط الشبكة
5. نشر توقيعات كشف حجب الخدمة على مستوى الشبكة
الضوابط البديلة (حتى توفر التصحيح):
6. تكوين جدار حماية Windows لحجب أنماط حركة TCP/IP المريبة
7. تطبيق التحكم في الوصول إلى الشبكة (NAC)
8. نشر أنظمة منع الاختراق (IPS) مع قواعد شذوذ TCP/IP
9. مراقبة حركة الشبكة للكشف عن أنماط غير عادية
10. وضع إجراءات الاستجابة للحوادث لأحداث حجب الخدمة
📋 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.13.1.3 - Segregation of networks
ECC 2024 A.16.1.5 - Response to information security incidents
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification
PR.IP-12 - System and information integrity
DE.CM-1 - Network monitoring
RS.RP-1 - Response planning
🟡 ISO 27001:2022
A.12.2.1 - Change management
A.12.6.1 - Management of technical vulnerabilities
A.13.1.3 - Segregation of networks
A.16.1.1 - Responsibilities and procedures
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates
Requirement 11.2 - Vulnerability scanning
📦 Affected Products / CPE 7 entries
microsoft:windows_11_24h2
microsoft:windows_11_24h2
microsoft:windows_11_25h2
microsoft:windows_11_25h2
microsoft:windows_11_26h1
microsoft:windows_11_26h1
microsoft:windows_server_2025