📄 Description (English)
InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write 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 20.5.2, 21.2 and earlier contain a critical out-of-bounds write vulnerability (CVE-2026-27291) that enables arbitrary code execution when users open malicious files. With a CVSS score of 7.8 and no patch currently available, this poses significant risk to Saudi organizations relying on InDesign for publishing and design workflows. Immediate user awareness and file validation controls are essential until Adobe releases patches.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 29, 2026 11:19
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in publishing, advertising, government communications, and media sectors face elevated risk. Government entities (NCA, ARAMCO communications, STC marketing divisions) and private sector design firms are primary targets. The requirement for user interaction limits mass exploitation but increases targeted attack risk against specific organizations. Financial services sector (SAMA-regulated banks) using InDesign for report generation and marketing materials are also at risk. No patch availability extends exposure window significantly.
🏢 Affected Saudi Sectors
Publishing and Media
Government Communications
Banking and Financial Services
Advertising and Marketing
Energy (ARAMCO communications)
Telecommunications (STC marketing)
Education and Research
Legal Services
🎯 MITRE ATT&CK Techniques
T1566.001 - Phishing: Spearphishing Attachment
T1204.002 - User Execution: Malicious File
T1059.001 - Command and Scripting Interpreter: PowerShell
T1059.003 - Command and Scripting Interpreter: Windows Command Shell
T1106 - Native API
T1053.005 - Scheduled Task/Job: Scheduled Task
T1547.001 - Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder
T1547.009 - Boot or Logon Autostart Execution: Shortcut Modification
T1218.009 - System Binary Proxy Execution: Regsvcs/Regasm
T1218.011 - System Binary Proxy Execution: Rundll32
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all InDesign installations across the organization, particularly versions 20.5.2 and 21.2
2. Disable InDesign file opening from untrusted sources; restrict to known internal design teams
3. Implement email gateway rules to block .indd, .idml, and related InDesign file formats from external senders
4. Conduct user awareness training emphasizing risks of opening unsolicited design files
COMPENSATING CONTROLS:
5. Isolate InDesign workstations from sensitive network segments using network segmentation
6. Run InDesign in sandboxed environments or virtual machines when processing external files
7. Disable macros and plugins in InDesign if not operationally required
8. Monitor file access logs for suspicious .indd file operations
DETECTION:
9. Deploy YARA rules to detect malicious InDesign file signatures
10. Monitor process execution from InDesign.exe for suspicious child processes (cmd.exe, powershell.exe, rundll32.exe)
11. Alert on InDesign process network connections to non-whitelisted destinations
12. Track file modifications in design directories for unauthorized changes
PATCHING:
13. Subscribe to Adobe security bulletins for patch availability
14. Plan immediate patching within 48 hours of Adobe release
15. Test patches in isolated environment before enterprise deployment
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع تثبيتات InDesign عبر المنظمة، خاصة الإصدارات 20.5.2 و21.2
2. تعطيل فتح ملفات InDesign من مصادر غير موثوقة؛ تقييد الوصول لفرق التصميم الداخلية المعروفة
3. تطبيق قواعد بوابة البريد الإلكتروني لحجب صيغ ملفات InDesign (.indd, .idml) من المرسلين الخارجيين
4. إجراء تدريب توعية للمستخدمين يؤكد على مخاطر فتح ملفات التصميم غير المطلوبة
الضوابط البديلة:
5. عزل محطات عمل InDesign عن أجزاء الشبكة الحساسة باستخدام تقسيم الشبكة
6. تشغيل InDesign في بيئات محمية أو آلات افتراضية عند معالجة الملفات الخارجية
7. تعطيل وحدات الماكروز والإضافات في InDesign إذا لم تكن مطلوبة تشغيلياً
8. مراقبة سجلات الوصول للملفات للعمليات المريبة على ملفات .indd
الكشف:
9. نشر قواعد YARA للكشف عن توقيعات ملفات InDesign الضارة
10. مراقبة تنفيذ العمليات من InDesign.exe للعمليات الفرعية المريبة (cmd.exe, powershell.exe, rundll32.exe)
11. التنبيه على اتصالات شبكة عمليات InDesign إلى وجهات غير مدرجة في القائمة البيضاء
12. تتبع تعديلات الملفات في دلائل التصميم للتغييرات غير المصرح بها
التصحيح:
13. الاشتراك في نشرات أمان Adobe للحصول على توفر التصحيحات
14. التخطيط للتصحيح الفوري خلال 48 ساعة من إصدار Adobe
15. اختبار التصحيحات في بيئة معزولة قبل النشر على مستوى المؤسسة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information security policies and procedures
ECC 2024 A.5.2.1 - User access management and authentication
ECC 2024 A.5.3.1 - Cryptography and secure communications
ECC 2024 A.5.4.1 - Physical and environmental security
ECC 2024 A.6.1.1 - Incident management and response
🔵 SAMA CSF
SAMA CSF Governance - Risk Management Framework
SAMA CSF Protect - Access Control and Authentication
SAMA CSF Detect - Monitoring and Detection Systems
SAMA CSF Respond - Incident Response Procedures
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for information security
ISO 27001:2022 A.5.2 - Information security roles and responsibilities
ISO 27001:2022 A.5.3 - Segregation of duties
ISO 27001:2022 A.6.1 - Screening and onboarding
ISO 27001:2022 A.8.1 - User endpoint devices
ISO 27001:2022 A.8.2 - Privileged access rights
ISO 27001:2022 A.8.3 - Information access restriction
ISO 27001:2022 A.8.4 - Access to cryptographic keys
ISO 27001:2022 A.8.5 - Authentication
ISO 27001:2022 A.8.6 - Capacity management
ISO 27001:2022 A.8.7 - Protection against malware
ISO 27001:2022 A.8.8 - Management of removable media
ISO 27001:2022 A.8.9 - Disposal of assets
ISO 27001:2022 A.8.10 - Physical and environmental security
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall configuration standards
PCI DSS 2.1 - Default security parameters
PCI DSS 6.2 - Security patches and updates
PCI DSS 6.4 - Secure development practices
PCI DSS 11.3 - Penetration testing
🔗 References & Sources 1
📦 Affected Products / CPE 2 entries
adobe:indesign
adobe:indesign