CVE-2025-54273
📋 TL;DR
CVE-2025-54273 is an out-of-bounds write vulnerability in Substance3D Viewer that allows arbitrary code execution when a user opens a malicious file. This affects all users running Substance3D Viewer version 0.25.2 or earlier. Successful exploitation gives attackers the same privileges as the current user.
💻 Affected Systems
- Adobe Substance3D Viewer
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the user's system, data theft, ransomware deployment, and lateral movement within the network.
Likely Case
Malware installation leading to data exfiltration, credential theft, or system disruption for individual users who open malicious files.
If Mitigated
Limited impact with only isolated user account compromise if proper application sandboxing and user privilege restrictions are in place.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of file format manipulation. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.25.3 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d-viewer/apsb25-99.html
Restart Required: Yes
Instructions:
1. Open Substance3D Viewer. 2. Go to Help > Check for Updates. 3. Follow prompts to install version 0.25.3 or later. 4. Restart the application.
🔧 Temporary Workarounds
Disable automatic file opening
allConfigure system to not automatically open Substance3D files and require explicit user confirmation
Restrict file execution
all🧯 If You Can't Patch
- Restrict user privileges to standard user accounts (not administrator)
- Implement network segmentation to limit lateral movement if compromised
🔍 How to Verify
Check if Vulnerable:
Open Substance3D Viewer, go to Help > About, check if version is 0.25.2 or earlierCheck Version:
On Windows: Check program version in Control Panel > Programs and Features. On macOS: Right-click Substance3D Viewer > Get InfoVerify Fix Applied:
Confirm version is 0.25.3 or later in Help > About menu📡 Detection & Monitoring
Log Indicators:
- Unexpected crashes of Substance3D Viewer
- Unusual process spawning from Substance3D Viewer
Network Indicators:
- Outbound connections from Substance3D Viewer to unknown IPs
- DNS requests for suspicious domains after file opening
SIEM Query:
process_name:"Substance3D Viewer" AND (event_type:crash OR parent_process:unusual)