Adobe Substance 3D Sampler: Out-of-bounds write allows code execution
Summary
Adobe Substance 3D Sampler up to version 6.0.3 on Windows and macOS contains an out-of-bounds write vulnerability (CWE-787). If a victim opens a malicious file, an attacker can execute arbitrary code with the rights of the current user. The attack requires the user to open the crafted file; no privileges are needed.
Affected
- Adobe Substance 3D Sampler 6.0.3 and earlier
- Windows and macOS
Fixed in
- Adobe Substance 3D Sampler 6.0.4 or later
Workaround
- Unknown. No workaround is documented by Adobe. Updating is the only documented fix.
- Until updated, only open Sampler files from trusted sources.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in this update.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- Not listed in CISA KEV. No public proof of concept found.
Our recommendation
- Update all Sampler installations to 6.0.4 or later via the Creative Cloud desktop app or the Admin Console.
- Identify and remove older Sampler installations.
- Instruct users to treat unsolicited or external Sampler files with caution until the update is applied.
- Keep Sampler up to date, as several out-of-bounds write issues were fixed in 2026.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-159 www.adobe.com
- Adobe Substance 3D Sampler release notes helpx.adobe.com
- Adobe Security: Substance 3D Sampler helpx.adobe.com
- ZDI October 2026 security update review www.zerodayinitiative.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 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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