# CVE-2026-83965: Adobe Substance 3D Sampler stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-83965-substance3d-sampler-is-affected-by-a-stack-based-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-83965 · Severity: high · CVSS 7.8 · Published 2026-10-13

Adobe Substance 3D Sampler is a 3D texture and material creation tool used in design workflows. A stack-based buffer overflow vulnerability allows attackers to execute arbitrary code on a victim's machine if they open a specially crafted malicious file, potentially leading to system compromise and data theft.

Technologies: [Adobe Substance 3D Sampler](https://junglewise.ai/threats/technologies/substance-3d-sampler). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-83965 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83965 being exploited in the wild.

**How severe is CVE-2026-83965?** High severity, with a CVSS score of 7.8, published 13 October 2026.

**Which products and versions are affected?** Adobe Substance 3D Sampler 6.0.3 and earlier.

**Is there a fix for CVE-2026-83965?** Yes: fixed in Substance 3D Sampler 6.0.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-83965 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-83965?** Check whether you run Adobe Substance 3D Sampler at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Substance 3D Sampler 6.0.4

## Technical details

The vulnerability is a stack-based buffer overflow (CWE-121) triggered by processing malicious input in files. Exploitation requires local access and user interaction—a victim must open a crafted file—but no authentication or additional privileges are needed. A successful exploit results in arbitrary code execution with the privileges of the current user.

## Affected products

- Adobe Substance 3D Sampler 6.0.3 and earlier

## Timeline

- 2026-10-13: disclosed

## References

- [https://www.adobe.com/trust/security/products/substance3d-sampler/apsb26-159.html](https://www.adobe.com/trust/security/products/substance3d-sampler/apsb26-159.html)

## Related threats

- [Adobe Substance 3D Sampler out-of-bounds write in file parsing](https://junglewise.ai/threats/cve-2026-83966-substance3d-sampler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance 3D Sampler out-of-bounds read](https://junglewise.ai/threats/cve-2026-100131-substance3d-sampler-is-affected-by-an-out-of-bounds-read)
- [Adobe Substance 3D Sampler out-of-bounds read in memory](https://junglewise.ai/threats/cve-2026-100130-substance3d-sampler-is-affected-by-an-out-of-bounds-read)
- [Adobe Substance3D Sampler heap buffer overflow](https://junglewise.ai/threats/cve-2026-83959-adobe-substance3d-sampler-heap-buffer-overflow)
- [Adobe Substance3D Sampler out-of-bounds write](https://junglewise.ai/threats/cve-2026-71382-adobe-substance3d-sampler-out-of-bounds-write)