Adobe Substance 3D Designer: Out-of-bounds write allows arbitrary code execution
Summary
Adobe Substance 3D Designer 16.0.5 and earlier on Windows and macOS contains an out-of-bounds write vulnerability (CWE-787). An attacker can exploit it to execute arbitrary code with the rights of the current user. Exploitation requires a local user to open a malicious file.
Affected
- Adobe Substance 3D Designer 16.0.5 and earlier (Windows and macOS)
- Some mirrors list "16.0.4 and prior"; the Adobe advisory is authoritative
- Linux or enterprise-only builds: Unknown.
Fixed in
- Adobe Substance 3D Designer 16.0.7 (Windows and macOS)
Workaround
- Unknown. No vendor workaround is published; update is the recommended fix.
- Until patched, avoid opening untrusted project or asset files (for example .sbs or .sbsar).
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-169.
- One mirror reports KEV: No; not verified against the CISA catalog.
- No public proof of concept found; this does not prove none exists.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Inventory Substance 3D Designer installations on Windows and macOS endpoints.
- Update to version 16.0.7 or later via the Creative Cloud desktop app or the Admin Console.
- Warn users not to open untrusted files from email, downloads or shared folders.
- Confirm the NVD and CISA KEV status before closing the ticket.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-169 www.adobe.com
- Tenable plugin 366461 www.tenable.com
- Strix CVE-2026-103821 www.strix.ai
- CVE threatint record cve.threatint.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 2 Nov 2026, 00:10.
Original description (NVD)
Substance3D - Designer is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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