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Vulnerabilities

CVE-2015-1770

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft Office Uninitialized Memory Use Vulnerability — Microsoft Office allows remote attackers to execute arbitrary code via a crafted Office document.
Published: Mar 28, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft Office Uninitialized Memory Use Vulnerability — Microsoft Office allows remote attackers to execute arbitrary code via a crafted Office document.

🤖 AI Executive Summary

CVE-2015-1770 is a critical remote code execution vulnerability in Microsoft Office affecting multiple versions, allowing attackers to execute arbitrary code through specially crafted Office documents. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to Saudi organizations relying on Office for document processing. Immediate patching is essential as this vulnerability can be exploited via email attachments or document sharing platforms commonly used in Saudi enterprises.

📄 Description (Arabic)

تعتبر هذه ثغرة حرجة في Microsoft Office تتعلق باستخدام الذاكرة غير المهيأة. يمكن للمهاجمين البعيدين استغلال هذه الثغرة بواسطة إنشاء مستند Office معدل بشكل خاص، مما يسمح لهم بتنفيذ كود عشوائي على النظام المتأثر.

🤖 ملخص تنفيذي (AI)

تسمح ثغرة في Microsoft Office للمهاجمين البعيدين بتنفيذ كود عشوائي من خلال مستند Office معدل خصيصاً

🤖 AI Intelligence Analysis Analyzed: Mar 29, 2026 19:00
🇸🇦 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). Telecom operators (STC, Mobily, Zain) and financial services firms are particularly vulnerable due to heavy reliance on Office documents for daily operations. The vulnerability enables lateral movement within corporate networks and potential access to sensitive financial data, classified government documents, and critical infrastructure information. Email-based attack vectors are especially effective in Saudi organizations with limited email security awareness training.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Services Energy and Utilities (ARAMCO, subsidiaries) Telecommunications (STC, Mobily, Zain) Education and Universities Insurance and Investment Manufacturing and Industrial
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Deploy Microsoft Office security updates immediately across all affected versions (Office 2007, 2010, 2013, 2016)
2. Implement email gateway controls to block Office documents from untrusted sources
3. Disable Office macros by default and require explicit user approval
4. Enable Protected View for all Office documents opened from internet/email sources

PATCHING GUIDANCE:
1. Prioritize patching for systems handling sensitive financial/government data
2. Apply MS15-022 and related Office security updates
3. Test patches in non-production environment before enterprise deployment
4. Maintain offline backups before patching critical systems

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement application whitelisting to restrict Office process execution
2. Deploy endpoint detection and response (EDR) solutions
3. Monitor for suspicious Office process spawning (winword.exe, excel.exe creating cmd.exe/powershell.exe)
4. Restrict Office macro execution via Group Policy

DETECTION RULES:
1. Monitor for Office applications creating child processes (cmd.exe, powershell.exe, rundll32.exe)
2. Alert on Office documents accessed from external email sources
3. Track unusual network connections initiated by Office processes
4. Monitor registry modifications related to Office security settings
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. نشر تحديثات أمان Microsoft Office فوراً على جميع الإصدارات المتأثرة (Office 2007، 2010، 2013، 2016)
2. تطبيق عناصر تحكم بوابة البريد الإلكتروني لحظر مستندات Office من مصادر غير موثوقة
3. تعطيل وحدات الماكروس في Office بشكل افتراضي وطلب موافقة صريحة من المستخدم
4. تفعيل Protected View لجميع مستندات Office المفتوحة من مصادر الإنترنت/البريد الإلكتروني

إرشادات التصحيح:
1. إعطاء الأولوية لتصحيح الأنظمة التي تتعامل مع البيانات المالية/الحكومية الحساسة
2. تطبيق MS15-022 والتحديثات الأمنية ذات الصلة في Office
3. اختبار التصحيحات في بيئة غير الإنتاج قبل النشر على مستوى المؤسسة
4. الحفاظ على نسخ احتياطية غير متصلة قبل تصحيح الأنظمة الحرجة

عناصر التحكم البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تطبيق قائمة بيضاء للتطبيقات لتقييد تنفيذ عمليات Office
2. نشر حلول الكشف والاستجابة على نقاط النهاية (EDR)
3. مراقبة إنشاء عمليات فرعية مريبة من Office (winword.exe، excel.exe ينشئ cmd.exe/powershell.exe)
4. تقييد تنفيذ وحدات الماكروس في Office عبر Group Policy

قواعد الكشف:
1. مراقبة تطبيقات Office التي تنشئ عمليات فرعية (cmd.exe، powershell.exe، rundll32.exe)
2. تنبيهات على مستندات Office التي يتم الوصول إليها من مصادر بريد إلكتروني خارجية
3. تتبع الاتصالات الشبكية غير العادية التي تبدأها عمليات Office
4. مراقبة تعديلات السجل المتعلقة بإعدادات أمان Office
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 - Information Security Policies and Procedures 5.2.1 - Access Control and Authentication 5.3.1 - Cryptography and Data Protection 5.4.1 - Incident Management 5.5.1 - Business Continuity and Disaster Recovery
🔵 SAMA CSF
Governance - Security Policy and Risk Management Protect - Access Control and Data Protection Detect - Monitoring and Threat Detection Respond - Incident Response Procedures Recover - Business Continuity Planning
🟡 ISO 27001:2022
A.5.1 - Management Direction for Information Security A.6.1 - Internal Organization A.8.1 - Asset Management A.12.2 - Protection from Malware A.12.6 - Management of Technical Vulnerabilities A.14.2 - Software Development
🟣 PCI DSS v4.0
Requirement 6.2 - Security Patches and Updates Requirement 6.5 - Secure Development Practices Requirement 11.2 - Vulnerability Scanning
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Office
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS78.19%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-04-18
Published 2022-03-28
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
🏷️ Tags
kev actively-exploited
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