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Vulnerabilities

CVE-2026-21287

High
Substance3D - Stager versions 3.1.5 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this is
CWE-416 — Weakness Type
Published: Jan 13, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
7.8
🔗 NVD Official
📄 Description (English)

Substance3D - Stager versions 3.1.5 and earlier are affected by a Use After Free 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 Substance3D Stager versions 3.1.5 and earlier contain a Use After Free vulnerability (CVE-2026-21287) that enables 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 3D design tools. A patch is available and should be deployed promptly to prevent potential compromise of design workstations.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 28, 2026 14:07
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in creative industries, architecture, engineering, and media sectors using Adobe Substance3D Stager face elevated risk. Government entities (particularly those under NCA oversight) using 3D design for urban planning, infrastructure projects, or digital transformation initiatives are vulnerable. The vulnerability could lead to lateral movement within corporate networks if design workstations are connected to internal systems. ARAMCO and energy sector contractors using 3D modeling for facility design and visualization are at particular risk. The requirement for user interaction reduces but does not eliminate risk, especially in environments where users receive design files from external partners or untrusted sources.
🏢 Affected Saudi Sectors
Architecture and Engineering Media and Entertainment Government (Urban Planning, Infrastructure) Energy (ARAMCO and contractors) Manufacturing and Design Construction and Real Estate Education and Research Institutions
⚖️ Saudi Risk Score (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running Adobe Substance3D Stager versions 3.1.5 or earlier through asset inventory and endpoint detection tools
2. Restrict file sharing and email attachments containing 3D design files (.stp, .step, .obj, .fbx, .glb formats) from external sources
3. Implement user awareness training emphasizing risks of opening design files from untrusted sources

PATCHING GUIDANCE:
1. Update Adobe Substance3D Stager to version 3.1.6 or later immediately
2. Prioritize patching for workstations handling sensitive design projects or connected to critical infrastructure networks
3. Test patches in non-production environment before enterprise deployment
4. Verify patch installation through Adobe's version verification tools

COMPENSATING CONTROLS (if immediate patching not possible):
1. Disable Substance3D Stager file associations for untrusted file sources
2. Implement application whitelisting to restrict Substance3D Stager execution
3. Run Substance3D Stager in sandboxed environments or virtual machines for processing external files
4. Restrict network access from design workstations to sensitive internal systems

DETECTION RULES:
1. Monitor for Substance3D Stager process crashes or unexpected terminations
2. Alert on Substance3D Stager spawning child processes (cmd.exe, powershell.exe, etc.)
3. Track file access patterns for suspicious .stp/.step/.obj files from external sources
4. Monitor for memory corruption indicators in Substance3D Stager process memory
5. Log all Substance3D Stager file open operations, especially from email or download directories
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تقوم بتشغيل Adobe Substance3D Stager الإصدارات 3.1.5 أو الأقدم من خلال أدوات جرد الأصول والكشف عن نقاط النهاية
2. تقييد مشاركة الملفات ومرفقات البريد الإلكتروني التي تحتوي على ملفات التصميم ثلاثي الأبعاد من المصادر الخارجية
3. تنفيذ تدريب الوعي بالمستخدمين يؤكد على مخاطر فتح ملفات التصميم من مصادر غير موثوقة

إرشادات التصحيح:
1. تحديث Adobe Substance3D Stager إلى الإصدار 3.1.6 أو أحدث على الفور
2. إعطاء الأولوية لتصحيح محطات العمل التي تتعامل مع مشاريع تصميم حساسة أو المتصلة بشبكات البنية التحتية الحرجة
3. اختبار التصحيحات في بيئة غير إنتاجية قبل النشر على مستوى المؤسسة
4. التحقق من تثبيت التصحيح من خلال أدوات التحقق من الإصدار من Adobe

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تعطيل ارتباطات ملفات Substance3D Stager للمصادر الموثوقة
2. تنفيذ القائمة البيضاء للتطبيقات لتقييد تنفيذ Substance3D Stager
3. تشغيل Substance3D Stager في بيئات معزولة أو آلات افتراضية لمعالجة الملفات الخارجية
4. تقييد الوصول إلى الشبكة من محطات العمل الخاصة بالتصميم إلى الأنظمة الداخلية الحساسة

قواعد الكشف:
1. مراقبة أعطال عملية Substance3D Stager أو الإنهاء غير المتوقع
2. التنبيه عند قيام Substance3D Stager بإنشاء عمليات فرعية (cmd.exe, powershell.exe, إلخ)
3. تتبع أنماط الوصول إلى الملفات للملفات المريبة .stp/.step/.obj من المصادر الخارجية
4. مراقبة مؤشرات تلف الذاكرة في ذاكرة عملية Substance3D Stager
5. تسجيل جميع عمليات فتح ملفات Substance3D Stager، خاصة من أدلة البريد الإلكتروني أو التنزيل
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information Security Policies and Procedures ECC 2024 A.6.1.1 - Access Control and Authentication ECC 2024 A.12.2.1 - Change Management ECC 2024 A.12.6.1 - Management of Technical Vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management and Inventory SAMA CSF PR.IP-12 - Software Development and Change Management SAMA CSF DE.CM-8 - Vulnerability Scanning and Management SAMA CSF RS.MI-2 - Incident Response and Recovery
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for Information Security ISO 27001:2022 A.8.1 - User Endpoint Devices ISO 27001:2022 A.12.6.1 - Management of Technical Vulnerabilities ISO 27001:2022 A.14.2.1 - Secure Development Policy
📦 Affected Products / CPE 1 entries
adobe:substance_3d_stager
📊 CVSS Score
7.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.8
CWECWE-416
EPSS0.04%
Exploit No
Patch ✓ Yes
Published 2026-01-13
Source Feed nvd
Views 2
🇸🇦 Saudi Risk Score
6.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-416
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