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Vulnerabilities

CVE-2022-26923

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft Active Directory Domain Services Privilege Escalation Vulnerability — An authenticated user could manipulate attributes on computer accounts they own or manage, and acquire a certificate fro
Published: Aug 18, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft Active Directory Domain Services Privilege Escalation Vulnerability — An authenticated user could manipulate attributes on computer accounts they own or manage, and acquire a certificate from Active Directory Certificate Services that would allow for privilege escalation to SYSTEM.

🤖 AI Executive Summary

CVE-2022-26923 is a critical privilege escalation vulnerability in Microsoft Active Directory Certificate Services (AD CS) that allows authenticated users to obtain certificates enabling SYSTEM-level access. With a CVSS score of 9.0 and publicly available exploits, this vulnerability poses an immediate threat to organizations relying on Active Directory for identity and access management. Rapid patching is essential to prevent unauthorized domain compromise and lateral movement.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 21:45
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability critically impacts Saudi government agencies (NCA, NCSC), SAMA-regulated financial institutions, and large enterprises using Active Directory. Banking sector (SAMBA members) faces elevated risk of unauthorized access to critical systems and customer data. Healthcare organizations (MOH) and energy sector (ARAMCO, SEC) are at high risk for operational disruption. Telecom providers (STC, Mobily, Zain) managing national infrastructure are particularly vulnerable. The vulnerability enables insider threats and compromised account exploitation, directly threatening national cybersecurity posture.
🏢 Affected Saudi Sectors
Government (NCA, NCSC, Ministry of Interior) Banking (SAMA-regulated institutions, SAMBA members) Healthcare (Ministry of Health, private hospitals) Energy (ARAMCO, SEC, utilities) Telecommunications (STC, Mobily, Zain) Education (Universities, research institutions) Defense and Security Large Enterprises with Active Directory infrastructure
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Apply Microsoft security patches (May 2022 or later) to all Active Directory Certificate Services servers immediately
2. Audit all issued certificates from AD CS for suspicious issuance patterns, particularly for computer accounts
3. Review and restrict permissions on computer account creation and management
4. Monitor for exploitation attempts using Windows Event Viewer (Event ID 4887 for certificate requests)

PATCHING GUIDANCE:
1. Prioritize patching AD CS servers in production environments
2. Test patches in non-production environments first
3. Implement phased rollout to minimize service disruption
4. Verify certificate revocation list (CRL) functionality post-patching

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement strict access controls on certificate enrollment permissions
2. Disable certificate auto-enrollment where not required
3. Monitor certificate requests and issuance in real-time
4. Implement multi-factor authentication for privileged accounts
5. Restrict computer account creation to authorized administrators only

DETECTION RULES:
1. Monitor Event ID 4887 (Certificate Services received a certificate request) for anomalies
2. Alert on certificate requests from unexpected computer accounts
3. Track modifications to computer account attributes (servicePrincipalName, userAccountControl)
4. Monitor for SYSTEM-level process execution from non-system accounts
5. Implement YARA rules for known exploitation tools (Certipy, Certify)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تصحيحات Microsoft الأمنية (مايو 2022 أو أحدث) على جميع خوادم خدمات شهادات Active Directory فوراً
2. تدقيق جميع الشهادات الصادرة من AD CS للتحقق من أنماط الإصدار المريبة
3. مراجعة وتقييد الأذونات على إنشاء حسابات الكمبيوتر
4. مراقبة محاولات الاستغلال باستخدام Windows Event Viewer (معرّف الحدث 4887)

إرشادات التصحيح:
1. إعطاء الأولوية لتصحيح خوادم AD CS في بيئات الإنتاج
2. اختبار التصحيحات في بيئات غير الإنتاج أولاً
3. تنفيذ طرح مرحلي لتقليل انقطاع الخدمة
4. التحقق من وظيفة قائمة إلغاء الشهادات بعد التصحيح

الضوابط البديلة:
1. تنفيذ ضوابط وصول صارمة على أذونات تسجيل الشهادات
2. تعطيل التسجيل التلقائي للشهادات حيث لا يكون مطلوباً
3. مراقبة طلبات الشهادات والإصدار في الوقت الفعلي
4. تنفيذ المصادقة متعددة العوامل للحسابات المميزة
5. تقييد إنشاء حسابات الكمبيوتر للمسؤولين المصرحين فقط

قواعد الكشف:
1. مراقبة معرّف الحدث 4887 للشذوذ
2. التنبيه على طلبات الشهادات من حسابات كمبيوتر غير متوقعة
3. تتبع تعديلات خصائص حسابات الكمبيوتر
4. مراقبة تنفيذ العمليات على مستوى SYSTEM من حسابات غير النظام
5. تنفيذ قواعد YARA لأدوات الاستغلال المعروفة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies ECC 2024 A.5.2.1 - User Registration and De-registration ECC 2024 A.5.3.1 - Access Rights Review ECC 2024 A.8.1.1 - Audit Logging ECC 2024 A.8.2.1 - Protection of Log Information
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Hardware and Software Assets SAMA CSF PR.AC-1 - Access Control Policy SAMA CSF PR.AC-4 - Access Rights Management SAMA CSF DE.CM-1 - System Monitoring SAMA CSF DE.AE-1 - Anomalies and Events Detection
🟡 ISO 27001:2022
ISO 27001:2022 A.5.3 - Segregation of Duties ISO 27001:2022 A.8.2 - Information Security Awareness ISO 27001:2022 A.8.3 - Access Control ISO 27001:2022 A.8.4 - Cryptography ISO 27001:2022 A.8.15 - Logging
🟣 PCI DSS v4.0
PCI DSS 2.1 - Configuration Standards PCI DSS 3.4 - Rendering PAN Unreadable PCI DSS 7.1 - Access Control Implementation PCI DSS 10.2 - User Access Logging
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Active Directory
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS91.75%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-09-08
Published 2022-08-18
Source Feed cisa_kev
Views 4
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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