# CVE-2026-83963: Adobe Substance3D Modeler out-of-bounds write

Source: https://junglewise.ai/threats/cve-2026-83963-substance3d-modeler-is-affected-by-an-out-of-bounds-write  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-83963 · Severity: high · CVSS 7.8 · Published 2026-09-22

Adobe Substance3D Modeler is a 3D design and modeling tool used by creative professionals. An out-of-bounds write vulnerability allows attackers to execute arbitrary code with the privileges of the current user by tricking a victim into opening a specially crafted file. This could allow an attacker to compromise a designer's workstation and access sensitive design files or escalate privileges.

Technologies: [Adobe Substance 3d Modeler](https://junglewise.ai/threats/technologies/substance-3d-modeler), [Adobe Substance3D Modeler](https://junglewise.ai/threats/technologies/substance3d-modeler). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-83963 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83963 being exploited in the wild.

**How severe is CVE-2026-83963?** High severity, with a CVSS score of 7.8, published 22 September 2026.

**Which products and versions are affected?** Adobe Substance3D Modeler <UNKNOWN>.

**Is there a fix for CVE-2026-83963?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-83963 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-83963?** Check whether you run Adobe Substance 3d Modeler or Adobe Substance3D Modeler 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.

## Technical details

The vulnerability is an out-of-bounds write in Substance3D Modeler that can be triggered when processing a malicious file. Exploitation requires user interaction to open the crafted file, and results in arbitrary code execution in the context of the logged-in user. A patch is available from Adobe.

## Affected products

- Adobe Substance3D Modeler <UNKNOWN>

## Timeline

- 2026-09-22: disclosed

## References

- [https://helpx.adobe.com/security/products/substance3d-modeler/apsb26-155.html](https://helpx.adobe.com/security/products/substance3d-modeler/apsb26-155.html)

## Related threats

- [Adobe Substance3D Modeler stack buffer overflow](https://junglewise.ai/threats/cve-2026-83962-substance3d-modeler-is-affected-by-a-stack-based-buffer-overflow)
- [Adobe Substance3D Modeler out-of-bounds write](https://junglewise.ai/threats/cve-2026-81998-substance3d-modeler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance3D Modeler out-of-bounds write](https://junglewise.ai/threats/cve-2026-79906-substance3d-modeler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance3D Modeler out-of-bounds read](https://junglewise.ai/threats/cve-2026-21348-adobe-substance3d-modeler-out-of-bounds-read)
- [Adobe Substance3D Modeler out-of-bounds read in file parsing](https://junglewise.ai/threats/cve-2026-21303-adobe-substance3d-modeler-out-of-bounds-read-in-file-parsing)