# CVE-2026-34683: Adobe Substance 3D Designer out-of-bounds write

Source: https://junglewise.ai/threats/cve-2026-34683-adobe-substance-3d-designer-out-of-bounds-write  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-05-14  
License: CC BY 4.0 with a link back

CVE-2026-34683 · Severity: high · CVSS 7.8 · Published 2026-05-12

Adobe Substance 3D Designer, a professional tool for creating 3D materials and textures, is affected by a security flaw that could allow an attacker to take control of a user's computer. To exploit this, an attacker would need to trick a user into opening a specially crafted malicious file. Successful exploitation could lead to unauthorized access to sensitive data or the disruption of business operations.

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

## Quick answers

**Is CVE-2026-34683 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34683 being exploited in the wild.

**How severe is CVE-2026-34683?** High severity, with a CVSS score of 7.8, published 12 May 2026.

**Which products and versions are affected?** Adobe Substance 3d Designer 15.1.0 and earlier.

**Is there a fix for CVE-2026-34683?** 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-2026-34683 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-34683?** Check whether you run Adobe Substance 3d Designer 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

An out-of-bounds write vulnerability (CWE-787) exists in Adobe Substance 3D Designer versions 15.1.0 and earlier. The flaw is triggered when the application processes a specially crafted file, leading to memory corruption. An attacker can leverage this to execute arbitrary code in the context of the current user. Exploitation requires local access and user interaction, specifically the opening of a malicious file. Adobe has addressed this issue in later versions, and users are advised to update to the latest available release.

## Affected products

- Adobe Substance 3D Designer 15.1.0 and earlier

## Timeline

- 2026-05-12: advisory: Initial disclosure by Adobe
- 2026-05-13: other: NVD enrichment and CVSS score update

## References

- [https://helpx.adobe.com/security/products/substance3d_designer/apsb26-52.html](https://helpx.adobe.com/security/products/substance3d_designer/apsb26-52.html)

## Related threats

- [Adobe Substance 3D Designer NULL pointer dereference denial-of-service](https://junglewise.ai/threats/cve-2026-103829-substance3d-designer-is-affected-by-a-null-pointer-dereference)
- [Adobe Substance 3D Designer null pointer dereference](https://junglewise.ai/threats/cve-2026-103828-substance3d-designer-is-affected-by-a-null-pointer-dereference)
- [Adobe Substance 3D Designer stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-103827-substance3d-designer-is-affected-by-a-stack-based-buffer)
- [Adobe Substance 3D Designer null pointer dereference](https://junglewise.ai/threats/cve-2026-103826-substance3d-designer-is-affected-by-a-null-pointer-dereference)
- [Adobe Substance 3D Designer out-of-bounds read in file parsing](https://junglewise.ai/threats/cve-2026-103825-substance3d-designer-is-affected-by-an-out-of-bounds-read)