CVE-2025-61834
📋 TL;DR
CVE-2025-61834 is a use-after-free vulnerability in Substance3D Stager that could allow arbitrary code execution when a user opens a malicious file. This affects users of Substance3D Stager versions 3.1.5 and earlier, requiring user interaction through file opening to trigger exploitation.
💻 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 user's system 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 use-after-free exploitation techniques.
🛠️ 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 Substance3D Stager. 2. Go to Help > Check for Updates. 3. Install available updates. 4. Restart the application. Alternatively, download and install the latest version from Adobe's website.
🔧 Temporary Workarounds
Restrict file opening
allPrevent users from opening untrusted Substance3D Stager files
Application sandboxing
allRun Substance3D Stager in a sandboxed environment to limit potential damage
🧯 If You Can't Patch
- Run Substance3D Stager with minimal user privileges (non-admin account)
- Implement application allowlisting to prevent execution of malicious payloads
🔍 How to Verify
Check if Vulnerable:
Check Substance3D Stager version in Help > About. If version is 3.1.5 or earlier, the system is vulnerable.Check Version:
Not applicable - check via application GUI Help > About menuVerify Fix Applied:
Verify version is 3.1.6 or later in Help > About. Test opening known safe files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes
- Suspicious file opening events from Substance3D Stager
- Unusual process spawning from Substance3D Stager
Network Indicators:
- Outbound connections from Substance3D Stager to unknown IPs
- DNS requests for suspicious domains after file opening
SIEM Query:
process_name:"Substance3D Stager" AND (event_type:crash OR parent_process:"Substance3D Stager")