📄 Description (English)
InDesign Desktop versions 21.0, 19.5.5 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 21.0, 19.5.5 and earlier contain a heap-based buffer overflow vulnerability (CVE-2026-21277) that could enable arbitrary code execution with user privileges. The vulnerability requires user interaction through opening a malicious file and carries a CVSS score of 7.8 (high severity). A patch is available and should be deployed immediately across all affected InDesign installations in Saudi organizations.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 28, 2026 14:07
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi media, publishing, and creative industries that heavily rely on Adobe InDesign for design and layout work. Government agencies using InDesign for official publications and documentation are at risk. The advertising and marketing sector in Saudi Arabia, including major agencies in Riyadh and Jeddah, faces potential compromise through malicious design files. Financial institutions using InDesign for report generation and marketing materials could be targeted. The vulnerability is particularly concerning as it requires only user interaction with a malicious file, making it suitable for targeted spear-phishing campaigns against Saudi organizations.
🏢 Affected Saudi Sectors
Media and Publishing
Government and Public Administration
Advertising and Marketing
Banking and Financial Services
Education and Universities
Telecommunications
Energy and Utilities
Healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all InDesign installations across your organization using asset management tools
2. Restrict file opening from untrusted sources until patching is complete
3. Disable InDesign auto-opening of recent files if possible
4. Implement email gateway controls to block suspicious design file attachments (.indd, .idml)
PATCHING GUIDANCE:
1. Update InDesign to version 21.1 or later (or 19.5.6+ for legacy versions)
2. Use Adobe Creative Cloud auto-update feature or manual updates from adobe.com
3. Test patches in non-production environment first
4. Prioritize patching for users handling external design files
COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement application whitelisting to restrict InDesign execution
2. Use file integrity monitoring on InDesign installation directories
3. Disable InDesign plugins from untrusted sources
4. Isolate InDesign workstations from sensitive network segments
DETECTION RULES:
1. Monitor for InDesign process crashes or unexpected terminations
2. Alert on InDesign opening files from external/removable media
3. Track InDesign memory access violations in system logs
4. Monitor for suspicious child processes spawned by InDesign (svchost.exe, powershell.exe, cmd.exe)
5. Implement YARA rules for malicious .indd file signatures
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات InDesign عبر المؤسسة باستخدام أدوات إدارة الأصول
2. تقييد فتح الملفات من مصادر غير موثوقة حتى اكتمال التصحيح
3. تعطيل الفتح التلقائي للملفات الحديثة في InDesign إن أمكن
4. تطبيق عناصر تحكم بوابة البريد الإلكتروني لحجب مرفقات ملفات التصميم المريبة
إرشادات التصحيح:
1. تحديث InDesign إلى الإصدار 21.1 أو أحدث (أو 19.5.6+ للإصدارات القديمة)
2. استخدام ميزة التحديث التلقائي لـ Adobe Creative Cloud أو التحديثات اليدوية من adobe.com
3. اختبار التصحيحات في بيئة غير الإنتاج أولاً
4. إعطاء الأولوية لتصحيح المستخدمين الذين يتعاملون مع ملفات التصميم الخارجية
عناصر التحكم البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تطبيق قائمة بيضاء للتطبيقات لتقييد تنفيذ InDesign
2. استخدام مراقبة سلامة الملفات على دلائل تثبيت InDesign
3. تعطيل مكونات InDesign الإضافية من مصادر غير موثوقة
4. عزل محطات عمل InDesign عن القطاعات الحساسة من الشبكة
قواعد الكشف:
1. مراقبة أعطال عملية InDesign أو الإنهاء غير المتوقع
2. التنبيه عند فتح InDesign لملفات من وسائط خارجية/قابلة للإزالة
3. تتبع انتهاكات الوصول إلى الذاكرة في سجلات النظام
4. مراقبة العمليات الفرعية المريبة التي تم إطلاقها بواسطة InDesign
5. تطبيق قواعد YARA لتوقيعات ملفات .indd الضارة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.5.2.1 - User access management
A.8.1.1 - Asset management and inventory
A.12.2.1 - Change management procedures
A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset management and criticality assessment
PR.IP-12 - Software, firmware, and information integrity mechanisms
DE.CM-8 - Vulnerability scans
RS.MI-2 - Incidents are mitigated
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development policy
A.12.2.1 - Change management
A.5.2.1 - User access management
🟣 PCI DSS v4.0.1
6.2 - Ensure all system components and software are protected from known vulnerabilities
6.1 - Establish a process to identify and assign a risk rating to newly discovered security vulnerabilities
🔗 References & Sources 1
📦 Affected Products / CPE 2 entries
adobe:indesign
adobe:indesign