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Vulnerabilities

CVE-2021-1789

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Apple Multiple Products Type Confusion Vulnerability — A type confusion issue affecting multiple Apple products allows processing of maliciously crafted web content, leading to arbitrary code executio
Published: May 4, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Apple Multiple Products Type Confusion Vulnerability — A type confusion issue affecting multiple Apple products allows processing of maliciously crafted web content, leading to arbitrary code execution.

🤖 AI Executive Summary

CVE-2021-1789 is a critical type confusion vulnerability in Apple products with a CVSS score of 9.0 that enables arbitrary code execution through maliciously crafted web content. The vulnerability affects multiple Apple platforms and has publicly available exploits, making it a high-priority threat. Immediate patching is essential for all organizations using affected Apple devices and services.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 20:49
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), and large enterprises using Apple devices for critical operations. Financial institutions using Apple infrastructure for trading platforms and customer-facing applications are particularly vulnerable. Telecommunications companies (STC, Mobily) and healthcare providers using Apple devices for patient data management face elevated risk. The arbitrary code execution capability could enable data theft, lateral movement, and compromise of sensitive government and financial systems.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Services Energy and Utilities Telecommunications Education Large Enterprises
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Apple devices (macOS, iOS, iPadOS, tvOS) in your environment using asset management tools
2. Prioritize patching for devices handling sensitive data or critical operations
3. Disable web browsing on affected devices until patching is complete
4. Implement network segmentation to isolate critical Apple systems

PATCHING GUIDANCE:
1. Apply latest security updates for all affected Apple products immediately
2. For macOS: Install latest security update via System Preferences > Software Update
3. For iOS/iPadOS: Update via Settings > General > Software Update
4. Verify patch installation and reboot systems
5. Maintain an inventory of patched vs. unpatched devices

COMPENSATING CONTROLS:
1. Deploy Web Application Firewall (WAF) rules to block malicious web content patterns
2. Implement Content Security Policy (CSP) headers on all web applications
3. Use endpoint detection and response (EDR) solutions to monitor for exploitation attempts
4. Restrict web browsing to approved sites only using proxy/firewall rules
5. Disable JavaScript execution where not required

DETECTION RULES:
1. Monitor for unexpected process spawning from Safari, WebKit, or browser processes
2. Alert on unusual memory access patterns or type confusion indicators
3. Track failed and successful web content processing attempts
4. Monitor for suspicious network connections from browser processes
5. Implement YARA rules for known exploit signatures
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Apple (macOS و iOS و iPadOS و tvOS) في بيئتك باستخدام أدوات إدارة الأصول
2. إعطاء الأولوية لتصحيح الأجهزة التي تتعامل مع البيانات الحساسة أو العمليات الحرجة
3. تعطيل تصفح الويب على الأجهزة المتأثرة حتى يتم إكمال التصحيح
4. تطبيق تقسيم الشبكة لعزل أنظمة Apple الحرجة

إرشادات التصحيح:
1. تطبيق أحدث تحديثات الأمان لجميع منتجات Apple المتأثرة فوراً
2. لـ macOS: تثبيت أحدث تحديث أمان عبر System Preferences > Software Update
3. لـ iOS/iPadOS: التحديث عبر Settings > General > Software Update
4. التحقق من تثبيت التصحيح وإعادة تشغيل الأنظمة
5. الحفاظ على قائمة جرد بالأجهزة المصححة وغير المصححة

الضوابط البديلة:
1. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحجب أنماط المحتوى الضار
2. تطبيق رؤوس سياسة أمان المحتوى (CSP) على جميع تطبيقات الويب
3. استخدام حلول الكشف والاستجابة على نقطة النهاية (EDR) لمراقبة محاولات الاستغلال
4. تقييد تصفح الويب بالمواقع المعتمدة فقط باستخدام قواعد الوكيل/جدار الحماية
5. تعطيل تنفيذ JavaScript حيث لا يكون مطلوباً

قواعد الكشف:
1. مراقبة عمليات غير متوقعة تنبثق من Safari أو WebKit أو عمليات المتصفح
2. التنبيه على أنماط الوصول إلى الذاكرة غير العادية أو مؤشرات التشويش على الأنواع
3. تتبع محاولات معالجة محتوى الويب الفاشلة والناجحة
4. مراقبة الاتصالات الشبكية المريبة من عمليات المتصفح
5. تطبيق قواعد YARA لتوقيعات الاستغلال المعروفة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information Security Policies and Procedures A.6.1.1 - Organization of Information Security A.12.6.1 - Management of Technical Vulnerabilities A.14.2.1 - Secure Development Policy
🔵 SAMA CSF
ID.RA-1 - Asset Management PR.IP-12 - Security Awareness and Training DE.CM-8 - Vulnerability Scans RS.RP-1 - Response Planning
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development policy and procedures A.12.2.1 - Restrictions on software installation A.12.3.1 - Information backup
🟣 PCI DSS v4.0
6.2 - Ensure security patches are installed 6.1 - Establish a process for identifying security vulnerabilities 11.2 - Run automated vulnerability scanning tools
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Apple:Multiple Products
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS0.24%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-05-25
Published 2022-05-04
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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