📄 Description (English)
Azure Function Information Disclosure Vulnerability
🤖 AI Executive Summary
CVE-2026-21532 is a high-severity information disclosure vulnerability in Azure Functions (CVSS 8.2) that could expose sensitive data through improper access controls. The vulnerability affects all versions of Azure Functions and requires immediate patching. While no public exploit is currently available, the information disclosure nature poses significant risk to organizations storing sensitive data in Azure cloud environments.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 25, 2026 18:31
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations leveraging Azure Functions for critical operations. Most impacted sectors include: Banking and Financial Services (SAMA-regulated institutions storing customer data and transaction records), Government entities (NCA, ministries using Azure for digital transformation), Healthcare providers (SEHA, private hospitals managing patient records), Energy sector (ARAMCO and subsidiaries using cloud infrastructure), and Telecommunications (STC, Mobily using Azure for service delivery). The information disclosure could expose PII, financial data, and operational intelligence critical to Saudi infrastructure.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Services
Energy and Utilities
Telecommunications
Insurance
E-commerce and Retail
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Inventory all Azure Functions deployments across your organization and identify those handling sensitive data
2. Review access control configurations and authentication mechanisms for Azure Functions
3. Enable Azure Function diagnostic logging and monitor for unauthorized access attempts
4. Implement network segmentation to restrict Azure Functions access to authorized users only
Patching Guidance:
1. Apply the latest Azure Functions runtime updates immediately through Azure Portal or Azure CLI
2. Update all function app configurations to enforce managed identities instead of connection strings
3. Enable Azure Key Vault integration for secrets management
4. Implement Azure RBAC with least privilege principles
Compensating Controls (if immediate patching delayed):
1. Restrict Azure Functions network access using Virtual Network integration
2. Implement Azure API Management as a gateway with authentication policies
3. Enable Azure Monitor alerts for suspicious data access patterns
4. Conduct immediate data classification and implement encryption at rest/in transit
Detection Rules:
1. Monitor Azure Activity Logs for unusual Azure Functions API calls
2. Alert on failed authentication attempts to function endpoints
3. Track changes to function app authentication settings
4. Monitor for data exfiltration patterns in network traffic
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع نشرات Azure Functions عبر مؤسستك وحدد تلك التي تتعامل مع البيانات الحساسة
2. راجع تكوينات التحكم في الوصول وآليات المصادقة لـ Azure Functions
3. فعّل تسجيل التشخيصات في Azure Functions ومراقبة محاولات الوصول غير المصرح بها
4. طبّق تقسيم الشبكة لتقييد وصول Azure Functions للمستخدمين المصرح لهم فقط
إرشادات التصحيح:
1. طبّق أحدث تحديثات وقت تشغيل Azure Functions فوراً عبر Azure Portal أو Azure CLI
2. حدّث جميع تكوينات تطبيق الدالة لفرض الهويات المدارة بدلاً من سلاسل الاتصال
3. فعّل تكامل Azure Key Vault لإدارة الأسرار
4. طبّق Azure RBAC مع مبادئ أقل امتياز
الضوابط البديلة (إذا تأخر التصحيح الفوري):
1. قيّد وصول شبكة Azure Functions باستخدام تكامل Virtual Network
2. طبّق Azure API Management كبوابة مع سياسات المصادقة
3. فعّل تنبيهات Azure Monitor لأنماط الوصول إلى البيانات المريبة
4. أجرِ تصنيف بيانات فوري وطبّق التشفير أثناء الراحة والنقل
قواعد الكشف:
1. راقب سجلات نشاط Azure للاتصالات غير العادية بـ Azure Functions API
2. أصدر تنبيهات لمحاولات المصادقة الفاشلة لنقاط نهاية الدالة
3. تتبع التغييرات في إعدادات مصادقة تطبيق الدالة
4. راقب أنماط تسرب البيانات في حركة المرور على الشبكة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policy
ECC 2024 A.6.1.2 - User Registration and De-registration
ECC 2024 A.8.2.1 - Classification of Information
ECC 2024 A.8.2.3 - Handling of Assets
ECC 2024 A.9.1.1 - Access Control
ECC 2024 A.9.2.1 - User Access Management
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management
SAMA CSF PR.AC-1 - Access Control Policy
SAMA CSF PR.AC-3 - Access Enforcement
SAMA CSF DE.AE-1 - Audit Logging
SAMA CSF DE.CM-1 - System Monitoring
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for Information Security
ISO 27001:2022 A.6.1 - Screening
ISO 27001:2022 A.8.1 - Asset Inventory
ISO 27001:2022 A.8.2 - Information Classification
ISO 27001:2022 A.9.1 - Access Control Policy
ISO 27001:2022 A.9.2 - User Access Management
ISO 27001:2022 A.9.4 - Access Rights Review
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Configuration Standards
PCI DSS 6.2 - Security Patches
PCI DSS 7.1 - Access Control
PCI DSS 8.1 - User Identification
PCI DSS 10.2 - Logging and Monitoring
📦 Affected Products / CPE 1 entries
microsoft:azure_functions:-