📄 Description (English)
Microsoft Office Outlook Security Feature Bypass Vulnerability — Microsoft Office Outlook contains a security feature bypass vulnerability due to improperly handling objects in memory. Successful exploitation allows an attacker to execute commands.
🤖 AI Executive Summary
CVE-2017-11774 is a critical security feature bypass vulnerability in Microsoft Outlook that allows attackers to execute arbitrary commands by exploiting improper handling of objects in memory. This vulnerability has been actively exploited in the wild, notably by Iranian APT groups (APT33/Shamoon) targeting Middle Eastern organizations. With a CVSS score of 9.0 and known exploits available, this represents an immediate threat to any organization using unpatched Microsoft Outlook. The vulnerability was patched by Microsoft in October 2017 but remains a significant risk for environments with legacy or unpatched systems.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 7, 2026 15:44
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses an extremely high risk to Saudi organizations given its documented exploitation by Iranian APT groups (APT33/Elfin) that have historically targeted Saudi Arabia's energy sector (Saudi Aramco), government entities, and critical infrastructure. Banking institutions regulated by SAMA, government agencies under NCA oversight, energy companies, petrochemical facilities, and telecommunications providers (STC, Mobily, Zain) are all at elevated risk. Microsoft Outlook is ubiquitous across Saudi enterprises, making the attack surface extensive. The APT33 group specifically used this vulnerability as an initial access vector in campaigns targeting Saudi Arabian and other Gulf state organizations.
🏢 Affected Saudi Sectors
Energy
Government
Banking
Petrochemical
Telecommunications
Defense
Healthcare
Education
⚖️ Saudi Risk Score (AI)
9.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Apply Microsoft Security Update KB4011196 (October 2017) immediately to all Outlook installations
2. Verify patch status across all endpoints using vulnerability scanning tools
3. Search for indicators of compromise associated with APT33 exploitation of this vulnerability
PATCHING GUIDANCE:
- Update Microsoft Outlook 2007 SP3, Outlook 2010 SP2, Outlook 2013 SP1, and Outlook 2016 to latest security updates
- Prioritize internet-facing and executive/VIP systems
- Consider upgrading legacy Outlook versions to Microsoft 365
COMPENSATING CONTROLS:
- Disable Outlook Home Page feature via Group Policy: Set 'Disable Outlook Home Page' to Enabled under User Configuration > Administrative Templates > Microsoft Outlook > Security
- Registry key: HKCU\Software\Microsoft\Office\<version>\Outlook\WebView - set all folder values to empty
- Implement application whitelisting to prevent unauthorized command execution
- Enable Attack Surface Reduction (ASR) rules in Microsoft Defender
DETECTION RULES:
- Monitor for suspicious child processes spawned by outlook.exe (cmd.exe, powershell.exe, mshta.exe, wscript.exe)
- Alert on modifications to Outlook WebView registry keys
- Monitor for unusual Outlook Home Page configurations
- Deploy YARA rules for known APT33 payloads
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تحديث الأمان من مايكروسوفت KB4011196 (أكتوبر 2017) فوراً على جميع تثبيتات Outlook
2. التحقق من حالة التصحيح عبر جميع نقاط النهاية باستخدام أدوات فحص الثغرات
3. البحث عن مؤشرات الاختراق المرتبطة باستغلال APT33 لهذه الثغرة
إرشادات التصحيح:
- تحديث Microsoft Outlook 2007 SP3 و Outlook 2010 SP2 و Outlook 2013 SP1 و Outlook 2016 إلى أحدث تحديثات الأمان
- إعطاء الأولوية للأنظمة المتصلة بالإنترنت وأنظمة كبار المسؤولين
- النظر في ترقية إصدارات Outlook القديمة إلى Microsoft 365
الضوابط التعويضية:
- تعطيل ميزة الصفحة الرئيسية لـ Outlook عبر سياسة المجموعة: تعيين 'تعطيل الصفحة الرئيسية لـ Outlook' إلى مُفعّل
- مفتاح السجل: HKCU\Software\Microsoft\Office\<version>\Outlook\WebView - تعيين جميع قيم المجلدات إلى فارغ
- تنفيذ القائمة البيضاء للتطبيقات لمنع تنفيذ الأوامر غير المصرح بها
- تفعيل قواعد تقليل سطح الهجوم (ASR) في Microsoft Defender
قواعد الكشف:
- مراقبة العمليات الفرعية المشبوهة التي يتم إنشاؤها بواسطة outlook.exe
- التنبيه على التعديلات في مفاتيح سجل WebView الخاصة بـ Outlook
- مراقبة تكوينات الصفحة الرئيسية غير العادية لـ Outlook
- نشر قواعد YARA للحمولات المعروفة لـ APT33
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-2:3-1 (Patch Management)
ECC-2:3-4 (Vulnerability Management)
ECC-2:5-1 (Malware Protection)
ECC-2:2-1 (Asset Management)
ECC-2:4-1 (Security Event Management)
🔵 SAMA CSF
3.3.3 (Patch Management)
3.3.4 (Vulnerability Management)
3.3.7 (Malware Protection)
3.4.1 (Threat Intelligence)
3.4.5 (Security Monitoring)
🟡 ISO 27001:2022
A.8.8 (Management of Technical Vulnerabilities)
A.8.7 (Protection Against Malware)
A.5.7 (Threat Intelligence)
A.8.15 (Logging)
A.8.16 (Monitoring Activities)
🟣 PCI DSS v4.0
6.3.3 (Install Critical Security Patches)
5.2 (Deploy Anti-Malware)
11.3 (Vulnerability Scanning)
6.1 (Identify Security Vulnerabilities)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Office