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Vulnerabilities

CVE-2012-1856

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft Office MSCOMCTL.OCX TabStrip ActiveX Remote Code Execution Vulnerability
Published: Mar 3, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft Office MSCOMCTL.OCX Remote Code Execution Vulnerability — The TabStrip ActiveX control in the Common Controls in MSCOMCTL.OCX in Microsoft Office allows remote attackers to execute arbitrary code via a crafted (1) document or (2) web page that triggers system-state corruption.

🤖 AI Executive Summary

A critical remote code execution vulnerability exists in the TabStrip ActiveX control within MSCOMCTL.OCX component of Microsoft Office. Attackers can exploit this flaw through malicious documents or web pages to execute arbitrary code by triggering system-state corruption, with active exploits available in the wild.

📄 Description (Arabic)

تؤثر هذه الثغرة على عنصر التحكم TabStrip ActiveX في المكتبة المشتركة MSCOMCTL.OCX المستخدمة في تطبيقات مايكروسوفت أوفيس. يستطيع المهاجمون صياغة مستندات أوفيس ضارة أو صفحات ويب خبيثة تحتوي على كود استغلال يؤدي إلى إفساد حالة النظام. عند فتح المستند الضار أو زيارة الصفحة المصابة، يتم تنفيذ كود تعسفي بصلاحيات المستخدم الحالي. تعتبر هذه الثغرة خطيرة جداً نظراً لانتشار استخدام مايكروسوفت أوفيس ووجود استغلالات عملية متاحة.

🤖 ملخص تنفيذي (AI)

توجد ثغرة حرجة لتنفيذ كود عن بعد في عنصر التحكم TabStrip ActiveX ضمن مكون MSCOMCTL.OCX في مايكروسوفت أوفيس. يمكن للمهاجمين استغلال هذه الثغرة من خلال مستندات أو صفحات ويب خبيثة لتنفيذ كود تعسفي عبر إفساد حالة النظام، مع وجود استغلالات نشطة متاحة.

🤖 AI Intelligence Analysis Analyzed: Feb 28, 2026 09:31
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations heavily reliant on Microsoft Office for daily operations face significant risk of targeted attacks through malicious documents or phishing campaigns. Government entities, financial institutions, and critical infrastructure operators under NCA and SAMA oversight are particularly vulnerable to data breaches and system compromise.
🏢 Affected Saudi Sectors
القطاع الحكومي القطاع المالي والمصرفي قطاع الطاقة والمرافق قطاع الرعاية الصحية قطاع التعليم قطاع الاتصالات وتقنية المعلومات القطاع الخاص
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
1. Immediately disable the TabStrip ActiveX control in MSCOMCTL.OCX by setting the kill bit in the Windows registry or using Microsoft Fix it solutions to prevent instantiation of the vulnerable control.
2. Implement application whitelisting and restrict execution of ActiveX controls through Group Policy settings, configuring Internet Explorer and Office applications to block untrusted ActiveX components.
3. Deploy enhanced email filtering and web content inspection to block malicious Office documents and web pages, while conducting user awareness training on risks of opening unsolicited documents from unknown sources.
🔧 خطوات المعالجة (العربية)
1. تعطيل عنصر التحكم TabStrip ActiveX في MSCOMCTL.OCX فوراً عبر تعيين بت الإيقاف (kill bit) في سجل ويندوز أو استخدام حلول Microsoft Fix it لمنع تشغيل العنصر المعرض للخطر.
2. تطبيق قوائم السماح للتطبيقات وتقييد تنفيذ عناصر التحكم ActiveX من خلال إعدادات نهج المجموعة، وتكوين متصفح إنترنت إكسبلورر وتطبيقات أوفيس لحظر مكونات ActiveX غير الموثوقة.
3. نشر تصفية محسّنة للبريد الإلكتروني وفحص محتوى الويب لحظر مستندات أوفيس وصفحات الويب الضارة، مع إجراء تدريب توعوي للمستخدمين حول مخاطر فتح المستندات غير المرغوبة من مصادر مجهولة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-2: Vulnerability Management ECC-3-1: System Hardening ECC-4-1: Security Awareness Training ECC-5-2: Malware Protection
🔵 SAMA CSF
CCC-1.1: Asset Management CCC-3.1: Vulnerability Assessment CCC-4.2: Secure Configuration CCC-6.1: Security Awareness
🟡 ISO 27001:2022
A.12.6.1: Management of Technical Vulnerabilities A.14.2.2: System Change Control Procedures A.8.2.3: Handling of Assets
🔗 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
EPSS91.95%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-03-24
Published 2022-03-03
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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