📄 Description (English)
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
🤖 AI Executive Summary
A heap-based buffer overflow vulnerability in Windows Kernel (CVE-2026-35420) affects multiple Windows Server versions from 2012 through 2025, allowing authorized local attackers to escalate privileges. With a CVSS score of 7.8 and no patch currently available, this poses significant risk to Saudi organizations running Windows Server infrastructure. The vulnerability requires local access but enables complete system compromise once exploited.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 18, 2026 06:01
🇸🇦 Saudi Arabia Impact Assessment
Critical impact on Saudi government entities (NCA, MODA), SAMA-regulated financial institutions, healthcare sector (MOH), and energy companies (ARAMCO, SEC). Windows Server 2016-2022 are widely deployed in Saudi data centers and government infrastructure. The privilege escalation capability directly threatens confidentiality, integrity, and availability of critical systems. Banking sector faces elevated risk for unauthorized access to financial systems. Government agencies risk compromise of classified information systems.
🏢 Affected Saudi Sectors
Banking & Financial Services (SAMA-regulated)
Government & Defense (NCA, MODA)
Healthcare (MOH)
Energy & Utilities (ARAMCO, SEC)
Telecommunications (STC, Mobily)
Critical Infrastructure
Education (Universities)
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Windows Server 2012-2025 deployments across your organization
2. Restrict local administrative access and implement principle of least privilege
3. Monitor for suspicious kernel-level activity and privilege escalation attempts
4. Disable unnecessary services and kernel extensions
COMPENSATING CONTROLS (until patch available):
5. Implement application whitelisting to prevent unauthorized code execution
6. Enable Windows Defender Exploit Guard and Attack Surface Reduction rules
7. Deploy EDR/XDR solutions with kernel-level monitoring capabilities
8. Enforce multi-factor authentication for all administrative access
9. Implement strict network segmentation isolating critical servers
10. Enable Windows Event Logging for process creation (Event ID 4688) and privilege use (Event ID 4672)
DETECTION RULES:
- Monitor for heap corruption indicators in kernel memory
- Alert on unexpected privilege token creation from non-system processes
- Track calls to vulnerable kernel APIs with suspicious parameters
- Monitor for kernel mode code execution from user-mode processes
PATCHING STRATEGY:
- Subscribe to Microsoft Security Update Guide for patch availability
- Prepare test environment for immediate patch deployment upon release
- Establish emergency patching procedures for critical systems
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع نشرات Windows Server 2012-2025 في مؤسستك
2. قيد الوصول الإداري المحلي وطبق مبدأ الامتياز الأقل
3. راقب النشاط على مستوى النواة ومحاولات تصعيد الامتيازات
4. عطل الخدمات والامتدادات غير الضرورية
الضوابط البديلة (حتى توفر التصحيح):
5. طبق قائمة التطبيقات المسموحة لمنع تنفيذ الأكواد غير المصرح بها
6. فعل Windows Defender Exploit Guard وقواعد تقليل سطح الهجوم
7. نشر حلول EDR/XDR مع مراقبة على مستوى النواة
8. فرض المصادقة متعددة العوامل لجميع الوصول الإداري
9. طبق تقسيم الشبكة الصارم لعزل الخوادم الحرجة
10. فعل تسجيل أحداث Windows لإنشاء العمليات والاستخدام الممتاز
قواعد الكشف:
- راقب مؤشرات تلف المخزن المؤقت في ذاكرة النواة
- أصدر تنبيهات لإنشاء رموز امتياز غير متوقعة من العمليات غير النظامية
- تتبع استدعاءات واجهات برمجة التطبيقات للنواة بمعاملات مريبة
- راقب تنفيذ الأكواد على مستوى النواة من عمليات وضع المستخدم
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.8.1.1 - User access management and authentication
A.8.2.1 - Privileged access rights management
A.12.2.1 - Change management procedures
A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
Governance & Risk Management - Vulnerability Management
Information & Cyber Security - Access Control
Information & Cyber Security - System Hardening
Operational Resilience - Incident Response
🟡 ISO 27001:2022
A.5.1 - Management direction for information security
A.8.1 - User endpoint devices
A.8.2 - Privileged access rights
A.8.3 - Information access restriction
A.12.6 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
Requirement 2.2 - Configuration standards for system components
Requirement 6.2 - Security patches and updates
Requirement 8.1 - User access control
Requirement 8.2 - Secure user authentication
📦 Affected Products / CPE 7 entries
microsoft:windows_server_2012:-
microsoft:windows_server_2012:r2
microsoft:windows_server_2016
microsoft:windows_server_2019
microsoft:windows_server_2022
microsoft:windows_server_2022_23h2
microsoft:windows_server_2025