CVE-2025-43553
📋 TL;DR
CVE-2025-43553 is an uncontrolled search path vulnerability in Substance3D Modeler that allows attackers to execute arbitrary code by tricking users into opening malicious files. The vulnerability affects users running versions 1.21.0 and earlier, enabling attackers to load malicious libraries or executables through path manipulation.
💻 Affected Systems
- Adobe Substance3D Modeler
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation or malware execution when users open specially crafted files from untrusted sources.
If Mitigated
No impact if users only open trusted files and proper application hardening is implemented.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of the application's search path behavior.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.22.0 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d-modeler/apsb25-51.html
Restart Required: Yes
Instructions:
1. Open Substance3D Modeler. 2. Go to Help > Check for Updates. 3. Follow prompts to install version 1.22.0 or later. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file execution from untrusted locations
allConfigure Windows/MacOS to prevent execution of files from temporary directories and untrusted network locations
Use application sandboxing
allRun Substance3D Modeler in a sandboxed environment to limit potential damage
🧯 If You Can't Patch
- Implement strict file opening policies - only open files from trusted sources
- Use endpoint protection software to detect and block malicious DLL/executable loading
🔍 How to Verify
Check if Vulnerable:
Check Help > About in Substance3D Modeler. If version is 1.21.0 or earlier, you are vulnerable.Check Version:
Not applicable - check via application GUIVerify Fix Applied:
After updating, verify version is 1.22.0 or later in Help > About.📡 Detection & Monitoring
Log Indicators:
- Unexpected DLL/executable loading from unusual paths
- Application crashes with suspicious file paths
Network Indicators:
- None - this is a local file-based vulnerability
SIEM Query:
Process creation events from Substance3D Modeler loading DLLs from non-standard paths