Adobe Substance 3D Sampler: Stack-based buffer overflow allows code execution
Summary
Adobe Substance 3D Sampler up to and including version 6.0.3 contains a stack-based buffer overflow (CWE-121) that can lead to arbitrary code execution in the context of the current user. An attacker must convince a victim to open a malicious file, so the attack is local and requires user interaction but no privileges. Adobe reports no known exploits in the wild.
Affected
- Adobe Substance 3D Sampler 6.0.3 and earlier
- Platforms: Windows and macOS
Fixed in
- Adobe Substance 3D Sampler 6.0.4 (Adobe security bulletin APSB26-159)
Workaround
Unknown.
- Until the update is installed, do not open project or material files from untrusted sources.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in this update.
- Public proof of concept: Unknown.
- CISA SSVC assessment: exploitation none, automatable no, technical impact total.
Our recommendation
- Inventory Substance 3D Sampler installations on Windows and macOS.
- Update all installations at 6.0.3 or earlier to 6.0.4 via the Creative Cloud desktop app or the Admin Console.
- Until patched, instruct users not to open files from untrusted sources.
- The same update also fixes CVE-2026-83966, CVE-2026-100131 and CVE-2026-100130.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-159 www.adobe.com
- Offseq threat radar entry for CVE-2026-83965 radar.offseq.com
- Strix CVE entry for CVE-2026-83965 www.strix.ai
- ThreatInt CVE entry for CVE-2026-83965 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, 00:05.
Original description (NVD)
Substance3D - Sampler is affected by a Stack-based Buffer Overflow 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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