📄 Description (English)
Apple iOS Webkit Memory Corruption Vulnerability — Apple iOS WebKit contains a memory corruption vulnerability that allows attackers to execute remote code or cause a denial-of-service (DoS) via a crafted web site. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
🤖 AI Executive Summary
CVE-2016-4657 is a critical memory corruption vulnerability in Apple iOS WebKit that allows remote code execution or denial-of-service through a crafted website. This vulnerability was actively exploited in the wild as part of the 'Pegasus' spyware chain developed by NSO Group, which was used to target journalists, activists, and government officials in the Middle East. With a CVSS score of 9.0 and known exploitation, this vulnerability poses an extreme risk, particularly given the documented use of Pegasus spyware against targets in the Gulf region including Saudi Arabia. Any device or application using WebKit for HTML rendering is potentially affected.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 6, 2026 06:17
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability has direct and documented impact on Saudi Arabia. The Pegasus spyware, which leveraged this exploit chain, was reportedly used against Saudi targets including journalists and dissidents. Critical sectors at risk include: Government agencies (NCA-regulated entities) where officials use iOS devices for communications; Banking/SAMA-regulated financial institutions where mobile banking apps may use WebKit; Energy sector (ARAMCO and affiliates) where executive devices could be targeted for espionage; Telecom operators (STC, Mobily, Zain) whose customers are exposed; and Royal Court/diplomatic personnel who are high-value targets for nation-state surveillance. Any unpatched iOS device in Saudi Arabia represents a potential entry point for sophisticated threat actors.
🏢 Affected Saudi Sectors
Government
Banking
Energy
Telecom
Defense
Healthcare
Diplomatic/Foreign Affairs
Media
⚖️ Saudi Risk Score (AI)
9.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Apple iOS devices across the organization and verify they are updated to iOS 9.3.5 or later, which patches this vulnerability
2. Identify any applications or systems using WebKit for HTML rendering and ensure they are updated
3. Block known Pegasus-related indicators of compromise (IOCs) at network perimeter
PATCHING GUIDANCE:
- Update all iOS devices to the latest available iOS version immediately
- Update macOS Safari and any WebKit-dependent browsers
- Enforce MDM policies requiring minimum OS versions that include this patch
COMPENSATING CONTROLS:
- Deploy Mobile Device Management (MDM) to enforce OS update policies
- Implement web content filtering to block known malicious domains
- Enable Apple's Lockdown Mode on high-value target devices (executives, VIPs)
- Restrict installation of configuration profiles from untrusted sources
- Monitor for unusual device behavior: unexpected reboots, battery drain, data usage spikes
DETECTION RULES:
- Monitor network traffic for connections to known NSO Group/Pegasus C2 infrastructure
- Alert on SMS/iMessage containing suspicious links targeting iOS devices
- Deploy mobile threat defense (MTD) solutions capable of detecting jailbreak attempts
- Monitor for WebKit crash logs that may indicate exploitation attempts
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Apple iOS في المنظمة والتحقق من تحديثها إلى iOS 9.3.5 أو أحدث
2. تحديد أي تطبيقات أو أنظمة تستخدم WebKit لعرض HTML والتأكد من تحديثها
3. حظر مؤشرات الاختراق المعروفة المتعلقة ببرنامج بيغاسوس على محيط الشبكة
إرشادات التصحيح:
- تحديث جميع أجهزة iOS إلى أحدث إصدار متاح فوراً
- تحديث متصفح Safari على macOS وأي متصفحات تعتمد على WebKit
- فرض سياسات إدارة الأجهزة المحمولة (MDM) التي تتطلب حداً أدنى من إصدارات نظام التشغيل
الضوابط التعويضية:
- نشر حلول إدارة الأجهزة المحمولة (MDM) لفرض سياسات تحديث نظام التشغيل
- تنفيذ تصفية محتوى الويب لحظر النطاقات الضارة المعروفة
- تفعيل وضع القفل (Lockdown Mode) من Apple على أجهزة الأهداف عالية القيمة
- تقييد تثبيت ملفات التكوين من مصادر غير موثوقة
- مراقبة السلوك غير المعتاد للأجهزة: إعادة التشغيل غير المتوقعة واستنزاف البطارية وارتفاع استخدام البيانات
قواعد الكشف:
- مراقبة حركة الشبكة للاتصالات بالبنية التحتية المعروفة لمجموعة NSO/بيغاسوس
- التنبيه على الرسائل النصية/iMessage التي تحتوي على روابط مشبوهة تستهدف أجهزة iOS
- نشر حلول الدفاع ضد تهديدات الأجهزة المحمولة القادرة على اكتشاف محاولات كسر الحماية
- مراقبة سجلات أعطال WebKit التي قد تشير إلى محاولات استغلال
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-2:3-1 (Asset Management)
ECC-2:5-1 (Vulnerability Management)
ECC-2:4-2 (Threat Management)
ECC-2:6-1 (Mobile Device Security)
ECC-2:3-4 (Patch Management)
🔵 SAMA CSF
3.3.3 (Patch Management)
3.3.5 (Vulnerability Management)
3.4.1 (Mobile Device Management)
3.3.7 (Threat Intelligence)
3.1.3 (Cyber Security Risk Management)
🟡 ISO 27001:2022
A.8.8 (Management of technical vulnerabilities)
A.8.1 (User endpoint devices)
A.5.7 (Threat intelligence)
A.8.20 (Networks security)
A.8.9 (Configuration management)
🟣 PCI DSS v4.0
6.3.3 (Patching security vulnerabilities)
6.2 (System components protected from known vulnerabilities)
11.3 (Penetration testing)
5.2 (Malicious software prevention)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Apple:iOS