CVE-2025-61803
📋 TL;DR
CVE-2025-61803 is an integer overflow vulnerability in Substance3D Stager that allows arbitrary code execution when a user opens a malicious file. This affects users of Substance3D Stager versions 3.1.4 and earlier. Attackers can exploit this to run code with the victim's user privileges.
💻 Affected Systems
- Adobe Substance3D Stager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the victim's machine and potentially pivoting to other systems.
Likely Case
Local privilege escalation leading to data theft, ransomware deployment, or persistence mechanisms installation.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions preventing system-wide compromise.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and understanding of the integer overflow trigger.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.5 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_stager/apsb25-104.html
Restart Required: Yes
Instructions:
1. Open Substance3D Stager. 2. Go to Help > Check for Updates. 3. Install available updates. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file opening
allOnly open Substance3D Stager files from trusted sources and disable automatic file associations.
Application sandboxing
allRun Substance3D Stager in a sandboxed environment to limit potential damage from exploitation.
🧯 If You Can't Patch
- Implement application allowlisting to restrict which users can run Substance3D Stager
- Deploy endpoint detection and response (EDR) solutions to monitor for suspicious file execution patterns
🔍 How to Verify
Check if Vulnerable:
Check Substance3D Stager version in Help > About. If version is 3.1.4 or earlier, system is vulnerable.Check Version:
Not applicable - check via application GUI Help > About menuVerify Fix Applied:
Verify version is 3.1.5 or later in Help > About after applying updates.📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes
- Suspicious file opening events from Substance3D Stager
Network Indicators:
- Unusual outbound connections from Substance3D Stager process
SIEM Query:
process_name:"Substance3D Stager" AND (event_type:crash OR file_path:*.sbs OR file_path:*.sbsar)