📄 Description (English)
Exposure of sensitive information to an unauthorized actor in Microsoft Graph allows an authorized attacker to disclose information over a network.
🤖 AI Executive Summary
CVE-2026-47655 is a medium-severity information disclosure vulnerability in Microsoft Graph that allows authorized attackers to access sensitive data over the network. While no public exploit exists and patches are unavailable, the vulnerability poses significant risk to Saudi organizations heavily dependent on Microsoft cloud services. Immediate mitigation through access controls and monitoring is essential until Microsoft releases patches.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Jun 5, 2026 03:01
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare providers using Microsoft 365, and energy sector organizations. Saudi Aramco and major telecom operators (STC, Mobily) utilizing Microsoft Graph for enterprise collaboration face significant risk. Government digital transformation initiatives and e-services platforms dependent on Microsoft cloud infrastructure are particularly vulnerable to insider threats and compromised account scenarios.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Services
Energy and Utilities
Telecommunications
Education
Insurance
🎯 MITRE ATT&CK Techniques
T1087 - Account Discovery
T1010 - Application Window Discovery
T1526 - Cloud Service Discovery
T1526.001 - Cloud Service Discovery: Find Cloud Service Credentials
T1580 - Cloud Infrastructure Discovery
T1538 - Cloud Service Dashboard
T1213 - Data from Information Repositories
T1213.002 - Data from Information Repositories: Sharepoint
T1114 - Email Collection
T1114.003 - Email Collection: Email Forwarding Rule
⚖️ Saudi Risk Score (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Audit all Microsoft Graph API permissions and access tokens across your organization
2. Review and restrict Graph API scopes to minimum required permissions (principle of least privilege)
3. Implement conditional access policies to restrict Graph API access by location, device compliance, and risk level
4. Enable Azure AD sign-in logs monitoring and alert on suspicious Graph API access patterns
5. Enforce multi-factor authentication (MFA) for all accounts with Graph API access
6. Review service principals and application permissions quarterly
Detection Rules:
7. Monitor for unusual Graph API calls accessing sensitive resources (mail, calendar, contacts, files)
8. Alert on Graph API access from non-corporate IP ranges or unusual geographic locations
9. Track failed authentication attempts to Graph API endpoints
10. Monitor for bulk data exports or unusual data access volumes
Compensating Controls:
11. Implement data loss prevention (DLP) policies on sensitive information accessed via Graph
12. Use Azure Information Protection to classify and protect sensitive data
13. Enable audit logging for all Graph API operations
14. Implement network segmentation to limit Graph API access
15. Monitor for CVE-2026-47655 patches from Microsoft and apply immediately upon release
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع أذونات Microsoft Graph وتوكنات الوصول عبر المنظمة
2. مراجعة وتقييد نطاقات Graph API للأذونات المطلوبة فقط (مبدأ أقل امتياز)
3. تنفيذ سياسات الوصول الشرطي لتقييد وصول Graph API حسب الموقع والامتثال للجهاز ومستوى المخاطر
4. تفعيل مراقبة سجلات تسجيل الدخول في Azure AD والتنبيه على أنماط وصول Graph API المريبة
5. فرض المصادقة متعددة العوامل (MFA) لجميع الحسابات التي تحتوي على وصول Graph API
6. مراجعة مبادئ الخدمة والأذونات التطبيقية ربع سنوياً
قواعد الكشف:
7. مراقبة استدعاءات Graph API غير العادية التي تصل إلى الموارد الحساسة (البريد والتقويم والجهات والملفات)
8. التنبيه على وصول Graph API من نطاقات IP غير الشركات أو المواقع الجغرافية غير العادية
9. تتبع محاولات المصادقة الفاشلة لنقاط نهاية Graph API
10. مراقبة تصدير البيانات الضخمة أو أحجام الوصول إلى البيانات غير العادية
الضوابط التعويضية:
11. تنفيذ سياسات منع فقدان البيانات (DLP) على المعلومات الحساسة التي يتم الوصول إليها عبر Graph
12. استخدام Azure Information Protection لتصنيف وحماية البيانات الحساسة
13. تفعيل تسجيل التدقيق لجميع عمليات Graph API
14. تنفيذ تقسيم الشبكة لتقييد وصول Graph API
15. مراقبة تصحيحات CVE-2026-47655 من Microsoft وتطبيقها فوراً عند الإصدار
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policy
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 - Information Security Awareness
ECC 2024 A.12.4.1 - Event Logging
ECC 2024 A.12.4.3 - Administrator and Operator Logs
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management
SAMA CSF PR.AC-1 - Access Control
SAMA CSF PR.AC-4 - Access Rights Management
SAMA CSF DE.AE-1 - Audit and Accountability
SAMA CSF DE.CM-1 - System Monitoring
🟡 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 - Information Security in Supplier Relationships
ISO 27001:2022 A.9.1 - Access Control
ISO 27001:2022 A.9.2 - User Access Management
ISO 27001:2022 A.12.4 - Logging
🟣 PCI DSS v4.0.1
PCI DSS 3.2.1 - Access Control Implementation
PCI DSS 7.1 - Limit Access to System Components
PCI DSS 10.1 - Implement Audit Trails
PCI DSS 10.2 - Implement User Identification
🔗 References & Sources 1