📄 Description (English)
Trend Micro Apex One and OfficeScan Authentication Bypass Vulnerability — Trend Micro Apex One and OfficeScan server contain a vulnerable EXE file that could allow a remote attacker to write data to a path on affected installations and bypass root login.
🤖 AI Executive Summary
CVE-2020-8599 is a critical authentication bypass vulnerability in Trend Micro Apex One and OfficeScan that allows remote attackers to write arbitrary data and bypass root login authentication. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to organizations relying on these endpoint protection solutions. The vulnerability enables complete compromise of security infrastructure, making it a top priority for remediation across all sectors.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 16:18
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses severe risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare organizations, energy sector (ARAMCO and subsidiaries), and telecommunications providers (STC, Mobily). Apex One and OfficeScan are widely deployed across Saudi enterprises as primary endpoint protection. Successful exploitation could allow attackers to disable security controls, establish persistent access, and compromise sensitive data across critical infrastructure. The authentication bypass directly threatens compliance with SAMA CSF and NCA ECC 2024 requirements for access control and endpoint security.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Institutions
Energy and Utilities
Telecommunications
Oil and Gas
Defense and Security
Education
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
T1190 - Exploit Public-Facing Application
T1548 - Abuse Elevation Control Mechanism
T1548.002 - Bypass User Account Control
T1078 - Valid Accounts
T1078.002 - Domain Accounts
T1133 - External Remote Services
T1021 - Remote Services
T1021.001 - Remote Desktop Protocol
T1098 - Account Manipulation
T1098.002 - Exchange Email Delegate Permissions
T1547 - Boot or Logon Autostart Execution
T1547.001 - Registry Run Keys / Startup Folder
T1059 - Command and Scripting Interpreter
T1543 - Create or Modify System Process
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Apex One and OfficeScan installations across your environment using asset discovery tools
2. Isolate affected servers from production networks if exploitation is suspected
3. Review access logs for suspicious administrative login attempts or file write operations to system directories
4. Disable remote access to Apex One/OfficeScan management consoles until patching is complete
PATCHING GUIDANCE:
1. Apply Trend Micro security patches immediately (Apex One 14.0 Update 1 or later, OfficeScan 11.0 SP1 Patch 3 or later)
2. Test patches in isolated lab environment before production deployment
3. Schedule patching during maintenance windows with minimal business impact
4. Verify patch installation by checking version numbers and file integrity
COMPENSATING CONTROLS (if patching delayed):
1. Implement network segmentation to restrict access to Apex One/OfficeScan management interfaces
2. Deploy WAF rules to block exploitation attempts targeting vulnerable endpoints
3. Enable enhanced logging and monitoring on affected systems
4. Implement IP whitelisting for administrative access
5. Monitor for suspicious file write operations in system directories
DETECTION RULES:
1. Alert on HTTP POST requests to Apex One/OfficeScan with suspicious payloads
2. Monitor for unauthorized file writes to system paths (C:\Windows\System32, /etc/)
3. Track failed and successful root/administrator login attempts
4. Detect process execution from unexpected directories following file writes
5. Monitor for lateral movement from compromised Apex One servers
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات Apex One و OfficeScan عبر بيئتك باستخدام أدوات اكتشاف الأصول
2. عزل الخوادم المتأثرة عن شبكات الإنتاج إذا كان هناك اشتباه في الاستغلال
3. مراجعة سجلات الوصول للمحاولات المريبة لتسجيل الدخول الإداري أو عمليات كتابة الملفات إلى دلائل النظام
4. تعطيل الوصول البعيد إلى وحدات تحكم إدارة Apex One/OfficeScan حتى اكتمال التصحيح
إرشادات التصحيح:
1. تطبيق تصحيحات أمان Trend Micro فوراً (Apex One 14.0 Update 1 أو أحدث، OfficeScan 11.0 SP1 Patch 3 أو أحدث)
2. اختبار التصحيحات في بيئة معملية معزولة قبل نشر الإنتاج
3. جدولة التصحيح خلال نوافذ الصيانة بأقل تأثير على الأعمال
4. التحقق من تثبيت التصحيح بفحص أرقام الإصدار وسلامة الملفات
الضوابط البديلة (إذا تأخر التصحيح):
1. تنفيذ تقسيم الشبكة لتقييد الوصول إلى واجهات إدارة Apex One/OfficeScan
2. نشر قواعد WAF لحظر محاولات الاستغلال التي تستهدف نقاط النهاية الضعيفة
3. تفعيل السجلات والمراقبة المحسنة على الأنظمة المتأثرة
4. تنفيذ القائمة البيضاء للعناوين IP للوصول الإداري
5. مراقبة عمليات كتابة الملفات المريبة في دلائل النظام
قواعد الكشف:
1. التنبيه على طلبات HTTP POST إلى Apex One/OfficeScan برسائل مريبة
2. مراقبة كتابة الملفات غير المصرح بها إلى مسارات النظام
3. تتبع محاولات تسجيل الدخول الفاشلة والناجحة للجذر/المسؤول
4. كشف تنفيذ العملية من دلائل غير متوقعة بعد كتابة الملفات
5. مراقبة الحركة الجانبية من خوادم Apex One المخترقة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Access Control Policy (authentication bypass violates access control)
A.5.2.1 - User Registration and De-registration (unauthorized access)
A.5.2.3 - Management of Privileged Access Rights (root login bypass)
A.5.3.1 - Password Management (authentication mechanism compromise)
A.8.1.1 - User Endpoint Devices (endpoint protection compromise)
A.8.2.1 - Information Security in Supplier Relationships (vendor security control failure)
🔵 SAMA CSF
ID.AM-2 - Asset Management (inventory of affected systems)
PR.AC-1 - Access Control Policy (authentication bypass)
PR.AC-4 - Access Rights Management (privileged access compromise)
PR.PT-1 - Security Awareness and Training (incident response)
DE.CM-1 - Detection Processes (monitoring for exploitation)
RS.RP-1 - Response Planning (incident response procedures)
🟡 ISO 27001:2022
A.5.1.1 - Policies for information security (access control policy)
A.5.2.1 - Privileged access rights (root login bypass)
A.5.3.1 - Password management (authentication compromise)
A.8.1.1 - User endpoint devices (endpoint protection failure)
A.8.1.3 - Clear desk and clear screen (data protection)
A.8.2.1 - User responsibilities (security incident reporting)
A.12.4.1 - Event logging (detection and monitoring)
🟣 PCI DSS v4.0
Requirement 2.1 - Default security parameters (change default credentials)
Requirement 7 - Restrict access to data (authentication bypass)
Requirement 8.1 - Unique user IDs (access control)
Requirement 8.2 - Strong authentication (authentication mechanism compromise)
Requirement 10 - Logging and monitoring (detection of exploitation)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Trend Micro:Apex One and OfficeScan