CVE-2025-64531
📋 TL;DR
A use-after-free vulnerability in Substance3D Stager versions 3.1.5 and earlier allows attackers to execute arbitrary code when a user opens a malicious file. This affects all users running vulnerable versions of Adobe's Substance3D Stager software. Successful exploitation requires user interaction but could lead to full system compromise.
💻 Affected Systems
- Adobe Substance3D Stager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with attacker gaining the same privileges as the logged-in user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation leading to malware installation, data exfiltration, or persistence mechanisms being established on the affected system.
If Mitigated
Limited impact due to proper file validation, user awareness training, and restricted user privileges preventing full system compromise.
🎯 Exploit Status
Exploitation requires user to open a malicious file. No public exploit code available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.6 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_stager/apsb25-113.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to 'Apps' section. 3. Find Substance3D Stager and click 'Update'. 4. Restart computer after update completes.
🔧 Temporary Workarounds
Restrict file opening
allPrevent users from opening untrusted .sbsar or other Substance3D files from unknown sources
Application control
windowsUse application whitelisting to restrict execution of Substance3D Stager to trusted users only
🧯 If You Can't Patch
- Implement strict file validation policies to block untrusted Substance3D files
- Run Substance3D Stager with limited user privileges to reduce impact scope
🔍 How to Verify
Check if Vulnerable:
Open Substance3D Stager, go to Help > About, check if version is 3.1.5 or earlierCheck Version:
On Windows: Check Add/Remove Programs for Substance3D Stager version. On macOS: Check Applications folder for version info.Verify Fix Applied:
Verify version is 3.1.6 or later in Help > About menu📡 Detection & Monitoring
Log Indicators:
- Application crashes in Substance3D Stager
- Unusual file access patterns from Substance3D process
Network Indicators:
- Outbound connections from Substance3D Stager to unknown IPs post-file opening
SIEM Query:
process_name:"Substance3D Stager.exe" AND (event_type:crash OR file_path:*.sbsar)