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Vulnerabilities

CVE-2015-1642

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft Office Memory Corruption Vulnerability — Microsoft Office contains a memory corruption vulnerability that allows remote attackers to execute arbitrary code via a crafted document.
Published: Mar 3, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft Office Memory Corruption Vulnerability — Microsoft Office contains a memory corruption vulnerability that allows remote attackers to execute arbitrary code via a crafted document.

🤖 AI Executive Summary

CVE-2015-1642 is a critical memory corruption vulnerability in Microsoft Office that enables remote code execution through malicious documents. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to Saudi organizations still running unpatched Office installations. The vulnerability requires only user interaction (opening a document) to trigger exploitation, making it highly dangerous in enterprise environments.

📄 Description (Arabic)

ثغرة حرجة في Microsoft Office تتعلق بتلف الذاكرة، حيث يمكن للمهاجمين البعيدين استغلالها لتنفيذ كود عشوائي على الأنظمة المتأثرة عن طريق إرسال مستند مصنوع بشكل خاص.

🤖 ملخص تنفيذي (AI)

تحتوي Microsoft Office على ثغرة تلف ذاكرة تسمح للمهاجمين البعيدين بتنفيذ كود عشوائي من خلال مستند مصنوع بعناية.

🤖 AI Intelligence Analysis Analyzed: Mar 29, 2026 09:52
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses critical risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), and large enterprises relying on Office for daily operations. Healthcare organizations using Office for patient records, energy sector (ARAMCO and subsidiaries), and telecommunications companies (STC, Mobily) are particularly vulnerable. The widespread use of Microsoft Office across Saudi organizations makes this a high-impact threat affecting business continuity and data confidentiality.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Services Energy and Petroleum Telecommunications Education Manufacturing Retail and Commerce
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running Microsoft Office versions affected by CVE-2015-1642 (Office 2010, 2013, 2016 and earlier versions)
2. Restrict document opening from untrusted sources; implement email gateway filtering for Office documents
3. Disable Office macros at the application level via Group Policy (GPO)

PATCHING GUIDANCE:
1. Apply Microsoft security updates immediately from Windows Update or WSUS
2. Prioritize patching for systems handling sensitive data (banking, government, healthcare)
3. Test patches in non-production environment before enterprise deployment
4. Verify patch installation using Microsoft Update Catalog verification

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement application whitelisting to prevent unauthorized code execution
2. Use AppLocker or Windows Defender Application Control (WDAC) policies
3. Disable Office in Protected View for untrusted documents
4. Implement network segmentation to isolate Office-dependent systems

DETECTION RULES:
1. Monitor for unexpected winword.exe, excel.exe, powerpnt.exe child processes
2. Alert on Office processes spawning cmd.exe, powershell.exe, or rundll32.exe
3. Monitor for abnormal memory access patterns in Office processes
4. Track failed and successful Office document opens from email attachments
5. Implement YARA rules for malicious Office document signatures
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بإصدارات Microsoft Office المتأثرة بـ CVE-2015-1642 (Office 2010، 2013، 2016 والإصدارات الأقدم)
2. تقييد فتح المستندات من مصادر غير موثوقة؛ تطبيق تصفية بوابة البريد الإلكتروني لمستندات Office
3. تعطيل وحدات Office الماكرو على مستوى التطبيق عبر Group Policy (GPO)

إرشادات التصحيح:
1. تطبيق تحديثات أمان Microsoft فوراً من Windows Update أو WSUS
2. إعطاء الأولوية لتصحيح الأنظمة التي تتعامل مع البيانات الحساسة (البنوك والحكومة والرعاية الصحية)
3. اختبار التصحيحات في بيئة غير إنتاجية قبل نشر المؤسسة
4. التحقق من تثبيت التصحيح باستخدام التحقق من كتالوج تحديث Microsoft

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تطبيق قائمة بيضاء للتطبيقات لمنع تنفيذ الأكواد غير المصرح بها
2. استخدام سياسات AppLocker أو Windows Defender Application Control (WDAC)
3. تعطيل Office في Protected View للمستندات غير الموثوقة
4. تطبيق تقسيم الشبكة لعزل الأنظمة المعتمدة على Office

قواعد الكشف:
1. مراقبة العمليات الفرعية غير المتوقعة لـ winword.exe و excel.exe و powerpnt.exe
2. التنبيه على عمليات Office التي تولد cmd.exe أو powershell.exe أو rundll32.exe
3. مراقبة أنماط الوصول غير الطبيعية للذاكرة في عمليات Office
4. تتبع محاولات فتح مستندات Office الفاشلة والناجحة من مرفقات البريد الإلكتروني
5. تطبيق قواعس YARA للتوقيعات الضارة لمستندات Office
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information Security Policies and Procedures A.6.2.1 - Authorized Access to Information and Other Assets A.8.1.1 - User Endpoint Devices A.8.2.1 - Privileged Access Rights A.12.2.1 - Event Logging A.12.6.1 - Management of Technical Vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset Management and Vulnerability Management PR.IP-12 - Software, Firmware, and Information Updates DE.CM-8 - Vulnerability Scans RS.MI-2 - Incident Response and Recovery
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development policy A.12.2.1 - Event logging A.6.2.1 - User access management
🟣 PCI DSS v4.0
6.2 - Security patches and updates 6.1 - Vulnerability management program 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
EPSS72.88%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-03-24
Published 2022-03-03
Source Feed cisa_kev
Views 2
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
🏷️ Tags
kev actively-exploited
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