📄 Description (English)
Trend Micro Multiple Products Improper Access Control Vulnerability — Trend Micro Apex One, OfficeScan, and Worry-Free Business Security on Microsoft Windows contain an improper access control vulnerability that may allow an attacker to manipulate a particular product folder to disable the security temporarily, abuse a specific Windows function, and attain privilege escalation.
🤖 AI Executive Summary
CVE-2020-24557 is a critical improper access control vulnerability affecting Trend Micro Apex One, OfficeScan, and Worry-Free Business Security on Windows, allowing attackers to escalate privileges and temporarily disable security protections. With a CVSS score of 9.0 and publicly available exploits, this vulnerability poses an immediate threat to organizations relying on these widely-deployed endpoint protection solutions. Immediate patching is essential to prevent unauthorized system compromise and lateral movement within enterprise networks.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 04:38
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses critical risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare organizations, and energy sector (ARAMCO and subsidiaries) that deploy Trend Micro endpoint protection. The privilege escalation capability enables attackers to bypass security controls, access sensitive data, and establish persistent backdoors. Telecom operators (STC, Mobily, Zain) managing critical infrastructure are particularly vulnerable. The temporary security disablement feature allows malware deployment and lateral movement undetected, directly impacting operational continuity and regulatory compliance.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Institutions
Energy and Utilities
Telecommunications
Critical Infrastructure
Education
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
T1548 - Abuse Elevation Control Mechanism
T1548.004 - Elevated Execution with Prompt
T1134 - Access Token Manipulation
T1547 - Boot or Logon Autostart Execution
T1547.001 - Registry Run Keys / Startup Folder
T1562 - Impair Defenses
T1562.001 - Disable or Modify Tools
T1036 - Masquerading
T1574 - Hijack Execution Flow
T1055 - Process Injection
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running Trend Micro Apex One, OfficeScan, or Worry-Free Business Security using asset inventory tools
2. Isolate affected systems from critical networks if patching cannot be completed within 24 hours
3. Enable enhanced logging and monitoring for privilege escalation attempts
PATCHING GUIDANCE:
1. Apply Trend Micro security patches immediately:
- Apex One: Update to version 14.0 SP1 or later
- OfficeScan: Update to version 14.0 SP1 or later
- Worry-Free Business Security: Update to version 9.0 SP3 or later
2. Prioritize patching for systems with administrative access or handling sensitive data
3. Test patches in isolated environment before enterprise deployment
COMPENSATING CONTROLS (if immediate patching unavailable):
1. Restrict local administrator access and enforce principle of least privilege
2. Implement application whitelisting to prevent unauthorized privilege escalation tools
3. Monitor and restrict access to Trend Micro product installation directories
4. Disable Windows functions that could be abused for privilege escalation (if operationally feasible)
5. Implement file integrity monitoring on Trend Micro product folders
DETECTION RULES:
1. Monitor for unauthorized modifications to Trend Micro installation directories
2. Alert on privilege escalation attempts targeting Trend Micro processes
3. Track suspicious access to Windows system functions from non-system processes
4. Monitor for temporary disabling of Trend Micro security services
5. Implement EDR rules detecting exploitation patterns: process creation with elevated tokens, suspicious parent-child relationships
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بـ Trend Micro Apex One أو OfficeScan أو Worry-Free Business Security باستخدام أدوات جرد الأصول
2. عزل الأنظمة المتأثرة عن الشبكات الحرجة إذا لم يتمكن التصحيح خلال 24 ساعة
3. تفعيل السجلات المحسّنة والمراقبة لمحاولات تصعيد الامتيازات
إرشادات التصحيح:
1. تطبيق تصحيحات أمان Trend Micro فوراً:
- Apex One: التحديث إلى الإصدار 14.0 SP1 أو أحدث
- OfficeScan: التحديث إلى الإصدار 14.0 SP1 أو أحدث
- Worry-Free Business Security: التحديث إلى الإصدار 9.0 SP3 أو أحدث
2. إعطاء الأولوية لتصحيح الأنظمة ذات الوصول الإداري أو التي تتعامل مع البيانات الحساسة
3. اختبار التصحيحات في بيئة معزولة قبل النشر على مستوى المؤسسة
الضوابط البديلة (إذا لم يكن التصحيح الفوري متاحاً):
1. تقييد وصول المسؤول المحلي وفرض مبدأ الحد الأدنى من الامتيازات
2. تنفيذ قائمة بيضاء للتطبيقات لمنع أدوات تصعيد الامتيازات غير المصرح بها
3. مراقبة وتقييد الوصول إلى مجلدات تثبيت منتجات Trend Micro
4. تعطيل وظائف Windows التي قد تُساء استخدامها لتصعيد الامتيازات (إن أمكن تشغيلياً)
5. تنفيذ مراقبة سلامة الملفات على مجلدات منتجات Trend Micro
قواعد الكشف:
1. مراقبة التعديلات غير المصرح بها على مجلدات تثبيت Trend Micro
2. تنبيهات محاولات تصعيد الامتيازات التي تستهدف عمليات Trend Micro
3. تتبع الوصول المريب إلى وظائف نظام Windows من عمليات غير النظام
4. مراقبة التعطيل المؤقت لخدمات أمان Trend Micro
5. تنفيذ قواعد EDR للكشف عن أنماط الاستغلال: إنشاء العمليات برموز مرتفعة، العلاقات المريبة بين الوالد والطفل
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information Security Policies and Procedures
A.6.1.1 - Internal Organization
A.6.2.1 - Access Control
A.8.1.1 - Asset Management
A.9.1.1 - Access Control Implementation
A.12.2.1 - Change Management
A.12.6.1 - Management of Technical Vulnerabilities
🔵 SAMA CSF
ID.AM-2 - Software Inventory
PR.AC-1 - Access Control Policy
PR.AC-4 - Access Rights Management
PR.PT-2 - Protective Technology
DE.CM-8 - Vulnerability Scans
RS.MI-2 - Incident Response Procedures
🟡 ISO 27001:2022
A.5.1 - Policies for Information Security
A.6.1 - Organization of Information Security
A.8.1 - Asset Management
A.9.1 - Access Control
A.12.2 - Change Management
A.12.6 - Management of Technical Vulnerabilities and Exposures
🟣 PCI DSS v4.0
Requirement 2.2 - Configuration Standards
Requirement 6.2 - Security Patches
Requirement 11.2 - Vulnerability Scanning
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Trend Micro:Apex One, OfficeScan, and Worry-Free Business Security