# CVE-2026-48428: Adobe Substance3D Designer heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-48428-adobe-substance3d-designer-heap-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-25. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-48428 · Severity: high · CVSS 7.8 · Published 2026-08-25

Substance3D Designer, Adobe's professional 3D content creation tool, is vulnerable to a heap-based buffer overflow that allows an attacker to execute arbitrary code with the privileges of the user running the application. An attacker must trick a user into opening a specially crafted malicious file to trigger the vulnerability, making this a practical risk for designers and artists who may receive files from untrusted sources.

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

## Quick answers

**Is CVE-2026-48428 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48428 being exploited in the wild.

**How severe is CVE-2026-48428?** High severity, with a CVSS score of 7.8, published 25 August 2026.

**Which products and versions are affected?** Adobe Substance3D Designer.

**Is there a fix for CVE-2026-48428?** 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-2026-48428 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-48428?** Check whether you run Adobe Substance 3d Designer or Adobe Substance3D Designer. 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

A heap-based buffer overflow vulnerability exists in Adobe Substance3D Designer, allowing arbitrary code execution in the context of the current user. The vulnerability is triggered by parsing a malicious file that the user must open—no network access or elevated privileges are required for exploitation. The attacker must craft a specific file format that, when processed by the application, causes a buffer overrun on the heap, enabling arbitrary code execution with user-level privileges. User interaction (opening a file) is required to trigger the vulnerability.

## Affected products

- Adobe Substance3D Designer

## Timeline

- 2026-08-25: disclosed

## References

- [https://helpx.adobe.com/security/products/substance3d_designer/apsb26-115.html](https://helpx.adobe.com/security/products/substance3d_designer/apsb26-115.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)