📄 Description (English)
InDesign Desktop versions 21.1, 20.5.1 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
🤖 AI Executive Summary
Adobe InDesign versions 21.1, 20.5.1 and earlier contain a heap-based buffer overflow vulnerability (CVE-2026-21357) that could enable arbitrary code execution with user privileges. The vulnerability requires user interaction through opening a malicious file, presenting a moderate-to-high risk for organizations using InDesign for design and publishing workflows. A patch is available and should be deployed promptly to mitigate exploitation risks.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 28, 2026 19:55
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in media, publishing, advertising, and government communications sectors using Adobe InDesign are at risk. High-impact sectors include: (1) Government agencies (NCA, MCIT) producing official publications and communications; (2) Media and broadcasting companies (MBC, Rotana, Al Arabiya); (3) Advertising and design agencies serving Saudi enterprises; (4) Educational institutions using InDesign for publications. The attack vector requires social engineering to distribute malicious InDesign files, making it particularly relevant for organizations receiving external design files or collaborating with international partners.
🏢 Affected Saudi Sectors
Media and Publishing
Government and Public Administration
Advertising and Marketing
Education
Design and Creative Services
Corporate Communications
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all InDesign installations across the organization using asset management tools
2. Prioritize patching for users handling external or untrusted InDesign files
3. Disable InDesign file opening from email attachments and unverified sources until patched
Patching Guidance:
1. Update Adobe InDesign to version 21.2 or later (or 20.6 if on 20.x branch)
2. Use Adobe Creative Cloud auto-update or manual download from adobe.com
3. Test patches in non-production environment before enterprise deployment
4. Verify patch installation by checking Help > About InDesign for version confirmation
Compensating Controls (if immediate patching not possible):
1. Implement application whitelisting to restrict InDesign execution
2. Disable opening of InDesign files from email and web downloads
3. Require file validation and scanning before opening InDesign documents
4. Restrict InDesign usage to trusted internal design teams only
Detection Rules:
1. Monitor for InDesign process crashes or unexpected terminations
2. Alert on InDesign opening files from temporary/download directories
3. Track InDesign process spawning child processes (cmd.exe, powershell.exe)
4. Log file access patterns to system directories from InDesign process
5. Monitor for heap memory corruption indicators in application logs
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات InDesign عبر المنظمة باستخدام أدوات إدارة الأصول
2. أولويات التصحيح للمستخدمين الذين يتعاملون مع ملفات InDesign خارجية أو غير موثوقة
3. تعطيل فتح ملفات InDesign من مرفقات البريد الإلكتروني والمصادر غير المتحققة حتى يتم التصحيح
إرشادات التصحيح:
1. تحديث Adobe InDesign إلى الإصدار 21.2 أو أحدث (أو 20.6 إذا كان على فرع 20.x)
2. استخدام التحديث التلقائي لـ Adobe Creative Cloud أو التنزيل اليدوي من adobe.com
3. اختبار التصحيحات في بيئة غير الإنتاج قبل النشر على مستوى المؤسسة
4. التحقق من تثبيت التصحيح بالتحقق من Help > About InDesign لتأكيد الإصدار
الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تطبيق قائمة بيضاء للتطبيقات لتقييد تنفيذ InDesign
2. تعطيل فتح ملفات InDesign من البريد الإلكتروني وتنزيلات الويب
3. طلب التحقق من الملفات والمسح قبل فتح مستندات InDesign
4. تقييد استخدام InDesign لفرق التصميم الداخلية الموثوقة فقط
قواعد الكشف:
1. مراقبة أعطال عملية InDesign أو الإنهاء غير المتوقع
2. تنبيهات فتح InDesign للملفات من الدلائل المؤقتة/التنزيلات
3. تتبع عملية InDesign التي تولد عمليات فرعية (cmd.exe, powershell.exe)
4. تسجيل أنماط الوصول إلى الملفات من دلائل النظام من عملية InDesign
5. مراقبة مؤشرات تلف ذاكرة الكومة في سجلات التطبيق
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information Security Policies (patch management policy)
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.14.2.1 - Secure development policy
ECC 2024 A.12.3.1 - Event logging and monitoring
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management and Vulnerability Identification
SAMA CSF PR.IP-12 - Software, firmware, and information integrity mechanisms
SAMA CSF DE.CM-1 - Detection and analysis of anomalies
SAMA CSF RS.MI-2 - Incident response and recovery procedures
🟡 ISO 27001:2022
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
ISO 27001:2022 A.14.2.1 - Secure development and change management
ISO 27001:2022 A.8.1.1 - Screening and vetting of personnel
ISO 27001:2022 A.12.3.1 - Logging and monitoring
🔗 References & Sources 1
📦 Affected Products / CPE 2 entries
adobe:indesign
adobe:indesign