📄 Description (English)
Microsoft DirectX Graphics Kernel Privilege Escalation Vulnerability — An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory.
🤖 AI Executive Summary
CVE-2018-8405 is a critical elevation of privilege vulnerability in the Microsoft DirectX Graphics Kernel (DXGKRNL) driver caused by improper handling of objects in memory. With a CVSS score of 9.0 and known exploits available, an authenticated attacker could execute arbitrary code in kernel mode, gaining full system control. This vulnerability affects Windows operating systems and poses significant risk to organizations that have not applied the August 2018 security updates. Given the availability of public exploits, immediate patching is essential to prevent local privilege escalation attacks.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 11, 2026 16:19
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations across all sectors that rely on Windows-based workstations and servers. Government entities regulated by NCA, banking institutions under SAMA oversight, energy sector organizations including ARAMCO and its contractors, and telecom providers like STC are all at risk if Windows systems remain unpatched. The availability of exploits makes this particularly dangerous in environments where insider threats or compromised user accounts could leverage this vulnerability for full kernel-level access. Saudi critical infrastructure running legacy Windows systems without the August 2018 patches are especially vulnerable to lateral movement and privilege escalation attacks.
🏢 Affected Saudi Sectors
Government
Banking
Energy
Telecom
Healthcare
Defense
Education
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Apply Microsoft security update KB4343909 (August 2018 Patch Tuesday) immediately on all affected Windows systems.
2. Prioritize patching on critical servers, domain controllers, and systems in sensitive network segments.
Patching Guidance:
- Deploy patches via WSUS, SCCM, or your enterprise patch management solution.
- Verify patch installation using 'wmic qfe list' or vulnerability scanning tools.
Compensating Controls:
- Restrict local logon rights to minimize the attack surface for local privilege escalation.
- Implement application whitelisting to prevent unauthorized code execution.
- Enable Windows Defender Credential Guard and Device Guard where supported.
- Monitor for suspicious DXGKRNL driver activity using EDR solutions.
Detection Rules:
- Monitor for unusual kernel-mode driver loading events (Sysmon Event ID 6).
- Alert on privilege escalation indicators such as unexpected SYSTEM-level process creation from user-context processes.
- Deploy YARA rules for known exploit payloads targeting DXGKRNL.
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تحديث الأمان من مايكروسوفت KB4343909 (تحديثات أغسطس 2018) فوراً على جميع أنظمة ويندوز المتأثرة.
2. إعطاء الأولوية للتصحيح على الخوادم الحرجة ووحدات التحكم بالمجال والأنظمة في قطاعات الشبكة الحساسة.
إرشادات التصحيح:
- نشر التصحيحات عبر WSUS أو SCCM أو حل إدارة التصحيحات المؤسسي.
- التحقق من تثبيت التصحيح باستخدام 'wmic qfe list' أو أدوات فحص الثغرات.
الضوابط التعويضية:
- تقييد حقوق تسجيل الدخول المحلي لتقليل سطح الهجوم لتصعيد الامتيازات المحلية.
- تنفيذ القوائم البيضاء للتطبيقات لمنع تنفيذ التعليمات البرمجية غير المصرح بها.
- تمكين Windows Defender Credential Guard و Device Guard حيثما كان مدعوماً.
- مراقبة نشاط برنامج تشغيل DXGKRNL المشبوه باستخدام حلول EDR.
قواعد الكشف:
- مراقبة أحداث تحميل برامج التشغيل غير العادية في وضع النواة (Sysmon Event ID 6).
- التنبيه على مؤشرات تصعيد الامتيازات مثل إنشاء عمليات بمستوى SYSTEM بشكل غير متوقع.
- نشر قواعد YARA للحمولات المعروفة التي تستهدف DXGKRNL.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
2-3-1 (Patch Management)
2-5-1 (Vulnerability Management)
2-2-1 (Asset Management)
2-6-1 (Event Logging and Monitoring)
🔵 SAMA CSF
3.3.3 (Patch Management)
3.3.4 (Vulnerability Management)
3.4.1 (Event Management and Monitoring)
3.1.3 (Endpoint Security)
🟡 ISO 27001:2022
A.8.8 (Management of technical vulnerabilities)
A.8.7 (Protection against malware)
A.8.15 (Logging)
A.8.9 (Configuration management)
🟣 PCI DSS v4.0
6.3.3 (Install critical security patches within one month)
11.3 (Penetration testing)
5.2 (Deploy anti-malware mechanisms)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:DirectX Graphics Kernel (DXGKRNL)