CVE-2026-21348
📋 TL;DR
Substance3D Modeler versions 1.22.5 and earlier contain an out-of-bounds read vulnerability that could allow memory exposure. An attacker could exploit this by tricking a user into opening a malicious file, potentially disclosing sensitive information from memory. Users of affected Substance3D Modeler versions are at risk.
💻 Affected Systems
- Adobe Substance3D Modeler
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Sensitive information like passwords, encryption keys, or proprietary data could be extracted from memory, leading to data breaches or further system compromise.
Likely Case
Limited memory disclosure of non-critical data due to the need for user interaction and specific file types.
If Mitigated
No impact if users avoid opening untrusted files or have patched software.
🎯 Exploit Status
Exploitation depends on user interaction to open malicious files.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.22.6 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d-modeler/apsb26-22.html
Restart Required: Yes
Instructions:
1. Open Substance3D Modeler. 2. Go to Help > Check for Updates. 3. Install update to version 1.22.6 or later. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file handling
allConfigure software to only open trusted file types or from trusted sources.
User awareness training
allTrain users to avoid opening untrusted or unexpected files.
🧯 If You Can't Patch
- Disable Substance3D Modeler until patched.
- Use application whitelisting to block execution of vulnerable versions.
🔍 How to Verify
Check if Vulnerable:
Check Substance3D Modeler version in application settings or About dialog.Check Version:
Open Substance3D Modeler and navigate to Help > About Substance3D Modeler.Verify Fix Applied:
Confirm version is 1.22.6 or later after update.📡 Detection & Monitoring
Log Indicators:
- Application crash logs from Substance3D Modeler
- Unexpected file access attempts
Network Indicators:
- Downloads of suspicious files by users
SIEM Query:
source="Substance3D Modeler" AND (event_type="crash" OR file_path="*.sbsar")