📄 Description (English)
MiCollab, MiVoice Business Express Access Control Vulnerability — A vulnerability has been identified in MiCollab and MiVoice Business Express that may allow a malicious actor to gain unauthorized access to sensitive information and services, cause performance degradations or a denial of service condition on the affected system.
🤖 AI Executive Summary
CVE-2022-26143 is a critical access control vulnerability in Mitel MiCollab and MiVoice Business Express (CVSS 9.0) that allows unauthorized access to sensitive information and services, with potential for denial of service. An exploit is publicly available, making this an immediate threat to organizations using these unified communications platforms. Patching is urgently required as this vulnerability directly impacts confidentiality, integrity, and availability of business communications infrastructure.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 19:41
🇸🇦 Saudi Arabia Impact Assessment
Saudi banking sector (SAMA-regulated institutions) faces critical risk as MiCollab/MiVoice are commonly deployed for internal communications and customer-facing services. Government agencies and ministries using these platforms for secure communications are at high risk of data exfiltration and service disruption. Telecommunications operators (STC, Mobily, Zain) relying on Mitel infrastructure for enterprise services could experience widespread outages. Healthcare organizations (MOH facilities) using unified communications for patient coordination are vulnerable. Energy sector (ARAMCO, utilities) communications infrastructure could be compromised. The exploit availability significantly elevates risk across all sectors.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Telecommunications
Healthcare
Energy and Utilities
Large Enterprises with Unified Communications
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running MiCollab or MiVoice Business Express in your environment
2. Isolate affected systems from untrusted networks if patching cannot be completed immediately
3. Enable enhanced logging and monitoring on these systems
4. Review access logs for unauthorized access attempts (look for unusual authentication patterns, API calls from unexpected sources)
PATCHING:
1. Apply Mitel security patches immediately (contact Mitel support for version-specific patches)
2. Prioritize production systems and customer-facing deployments
3. Test patches in non-production environment first
4. Schedule maintenance windows for patching within 48-72 hours
COMPENSATING CONTROLS (if patching delayed):
1. Implement network segmentation - restrict access to MiCollab/MiVoice systems to authorized networks only
2. Deploy WAF/IPS rules to block known exploit patterns
3. Enforce strong authentication (MFA) for administrative access
4. Disable unnecessary services and APIs
5. Implement rate limiting on authentication endpoints
DETECTION:
1. Monitor for HTTP requests with suspicious parameters to MiCollab/MiVoice endpoints
2. Alert on failed authentication attempts followed by successful access
3. Track unusual API calls or service requests from external IPs
4. Monitor for abnormal system resource consumption (DoS indicators)
5. Implement SIEM rules for access control bypass attempts
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بـ MiCollab أو MiVoice Business Express في بيئتك
2. عزل الأنظمة المتأثرة عن الشبكات غير الموثوقة إذا لم يكن بالإمكان إكمال التصحيح فوراً
3. تفعيل السجلات والمراقبة المحسّنة على هذه الأنظمة
4. مراجعة سجلات الوصول للكشف عن محاولات الوصول غير المصرح به
تطبيق التصحيحات:
1. تطبيق تصحيحات أمان Mitel فوراً (التواصل مع دعم Mitel للحصول على التصحيحات الخاصة بالإصدار)
2. إعطاء الأولوية للأنظمة الإنتاجية والنشرات الموجهة للعملاء
3. اختبار التصحيحات في بيئة غير إنتاجية أولاً
4. جدولة نوافذ الصيانة لتطبيق التصحيحات خلال 48-72 ساعة
الضوابط البديلة (إذا تأخر التصحيح):
1. تنفيذ تقسيم الشبكة - تقييد الوصول إلى أنظمة MiCollab/MiVoice للشبكات المصرح بها فقط
2. نشر قواعد WAF/IPS لحجب أنماط الاستغلال المعروفة
3. فرض المصادقة القوية (MFA) للوصول الإداري
4. تعطيل الخدمات والواجهات البرمجية غير الضرورية
5. تنفيذ تحديد معدل على نقاط نهاية المصادقة
الكشف:
1. مراقبة طلبات HTTP بمعاملات مريبة إلى نقاط نهاية MiCollab/MiVoice
2. التنبيه على محاولات المصادقة الفاشلة متبوعة بالوصول الناجح
3. تتبع استدعاءات API غير العادية أو طلبات الخدمة من عناوين IP خارجية
4. مراقبة استهلاك موارد النظام غير الطبيعي (مؤشرات DoS)
5. تنفيذ قواعد SIEM لمحاولات تجاوز التحكم بالوصول
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.6.1.1 - Access control policy
A.6.2.1 - User registration and access rights management
A.6.2.2 - Privileged access rights
A.8.2.1 - User endpoint devices
A.8.3.1 - Information and other assets associated with information processing facilities
🔵 SAMA CSF
ID.AC-1 - Access Control Policy and Procedures
ID.AC-2 - Physical and Logical Access Controls
PR.AC-1 - Identities and Credentials Management
PR.AC-2 - Physical Access Control
DE.AE-1 - A baseline of network operations and expected data flows for users and systems is established and managed
🟡 ISO 27001:2022
5.3 - Segregation of duties
6.2 - Competence
8.1 - Operational planning and control
8.2 - Supply chain relationships
A.5.1.1 - Policies for information security
A.6.1.1 - Access control
A.6.2.1 - User registration and access rights
A.6.2.2 - Privileged access rights
A.8.1.1 - User endpoint devices
🟣 PCI DSS v4.0
Requirement 2 - Default security parameters
Requirement 6 - Secure development and vulnerability management
Requirement 7 - Restrict access to data by business need to know
Requirement 8 - Identify and authenticate access
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Mitel:MiCollab, MiVoice Business Express