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Vulnerabilities

CVE-2019-1132

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft Win32k Privilege Escalation Vulnerability — A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory.
Published: Mar 15, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft Win32k Privilege Escalation Vulnerability — A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory.

🤖 AI Executive Summary

CVE-2019-1132 is a critical privilege escalation vulnerability in the Windows Win32k kernel component that allows local attackers to execute arbitrary code in kernel mode. With a CVSS score of 9.0 and confirmed exploit availability, this vulnerability has been actively exploited in the wild, including by advanced persistent threat (APT) groups. Successful exploitation grants attackers SYSTEM-level privileges, enabling complete system compromise, lateral movement, and persistent access. Immediate patching is strongly recommended for all Windows environments.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 13, 2026 10:32
🇸🇦 Saudi Arabia Impact Assessment
هذه الثغرة تمثل خطراً بالغاً على المؤسسات السعودية في القطاعات التالية: القطاع الحكومي (الجهات الخاضعة لإشراف هيئة الاتصالات وتقنية المعلومات والهيئة الوطنية للأمن السيبراني) حيث تُستخدم أنظمة Windows على نطاق واسع في البنية التحتية الحيوية؛ القطاع المصرفي والمالي الخاضع لإشراف ساما حيث يمكن أن يؤدي الاستغلال إلى اختراق أنظمة المعاملات المالية؛ قطاع الطاقة بما في ذلك أرامكو السعودية وشركات المرافق التي تعتمد على أنظمة Windows في بيئات OT/IT؛ قطاع الرعاية الصحية الذي يعتمد على أنظمة Windows في إدارة السجلات الطبية؛ وقطاع الاتصالات بما في ذلك STC وزين. نظراً لأن هذه الثغرة تُستغل بشكل نشط من قِبل جهات تهديد متقدمة، فإن المؤسسات السعودية التي لم تُطبّق التصحيحات تُعدّ أهدافاً عالية الخطورة.
🏢 Affected Saudi Sectors
Government Banking Energy Healthcare Telecom Defense Education Transportation
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Apply Microsoft Security Update KB4507456 (July 2019 Patch Tuesday) immediately for all affected Windows versions.
2. Prioritize patching of internet-facing systems, domain controllers, and critical infrastructure servers.
3. Isolate any systems suspected of compromise from the network immediately.

PATCHING GUIDANCE:
4. Download and deploy patches from Microsoft Update Catalog: https://www.catalog.update.microsoft.com
5. Verify patch deployment using WSUS, SCCM, or equivalent patch management tools.
6. Ensure all Windows versions (Windows 7, Windows Server 2008 R2, Windows Server 2012, Windows 10, Windows Server 2016/2019) are patched.

COMPENSATING CONTROLS (if patching is delayed):
7. Restrict local user privileges — enforce least privilege principles and remove unnecessary local admin rights.
8. Deploy application whitelisting (Windows Defender Application Control / AppLocker) to prevent unauthorized code execution.
9. Enable Windows Defender Exploit Guard and Attack Surface Reduction (ASR) rules.
10. Monitor for suspicious Win32k-related kernel activity using EDR solutions.
11. Implement privileged access workstations (PAWs) for administrative tasks.

DETECTION RULES:
12. Monitor for unusual SYSTEM-level process creation from non-privileged user contexts.
13. Create SIEM alerts for Event ID 4688 (process creation) with unexpected privilege escalation patterns.
14. Deploy Sigma rules targeting Win32k exploitation patterns.
15. Hunt for indicators of compromise: unusual kernel-mode code execution, unexpected privilege tokens, and anomalous lsass.exe interactions.
16. Enable Windows Event Log auditing for privilege use (Event IDs 4672, 4673, 4674).
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تحديث Microsoft الأمني KB4507456 (تحديث يوليو 2019) فوراً على جميع إصدارات Windows المتأثرة.
2. إعطاء الأولوية لتصحيح الأنظمة المكشوفة على الإنترنت ووحدات التحكم بالنطاق وخوادم البنية التحتية الحيوية.
3. عزل أي أنظمة يُشتبه في اختراقها عن الشبكة فوراً.

إرشادات التصحيح:
4. تنزيل ونشر التصحيحات من كتالوج Microsoft Update.
5. التحقق من نشر التصحيحات باستخدام WSUS أو SCCM أو أدوات إدارة التصحيحات المعادلة.
6. التأكد من تصحيح جميع إصدارات Windows المتأثرة.

ضوابط التعويض (في حال تأخر التصحيح):
7. تقييد صلاحيات المستخدمين المحليين وتطبيق مبدأ الصلاحيات الدنيا.
8. نشر قوائم السماح للتطبيقات باستخدام Windows Defender Application Control أو AppLocker.
9. تفعيل Windows Defender Exploit Guard وقواعد تقليل سطح الهجوم.
10. مراقبة نشاط النواة المرتبط بـ Win32k باستخدام حلول EDR.
11. تطبيق محطات العمل ذات الوصول المميز للمهام الإدارية.

قواعد الكشف:
12. مراقبة إنشاء العمليات على مستوى SYSTEM من سياقات المستخدمين غير المميزين.
13. إنشاء تنبيهات SIEM لمعرف الحدث 4688 مع أنماط تصعيد الصلاحيات غير المتوقعة.
14. نشر قواعد Sigma التي تستهدف أنماط استغلال Win32k.
15. البحث عن مؤشرات الاختراق: تنفيذ الكود في وضع النواة، ورموز الصلاحيات غير المتوقعة.
16. تفعيل تدقيق سجل أحداث Windows لاستخدام الصلاحيات.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Patch Management and Vulnerability Management ECC-1-4-3: Malware Protection ECC-2-2-1: Access Control and Privilege Management ECC-2-3-1: Endpoint Security ECC-3-3-3: Security Monitoring and Logging
🔵 SAMA CSF
Cybersecurity Operations — Vulnerability Management Cybersecurity Operations — Patch Management Identity and Access Management — Privileged Access Management Endpoint Security — Workstation and Server Hardening Cybersecurity Monitoring — Threat Detection and Response
🟡 ISO 27001:2022
A.8.8 — Management of technical vulnerabilities A.8.2 — Privileged access rights A.8.7 — Protection against malware A.8.15 — Logging A.8.16 — Monitoring activities A.5.30 — ICT readiness for business continuity
🟣 PCI DSS v4.0
Requirement 6.3.3 — All system components are protected from known vulnerabilities by installing applicable security patches Requirement 7.2 — Access to system components and data is appropriately defined and assigned Requirement 10.2 — Audit logs capture all individual user access to cardholder data Requirement 11.3 — External and internal vulnerabilities are regularly identified, prioritized, and addressed
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Win32k
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS35.64%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-04-05
Published 2022-03-15
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
🏷️ Tags
kev actively-exploited
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