# CVE-2026-48432: Adobe Substance3D Designer heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-48432-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-2026-48432 · Severity: high · CVSS 7.8 · Published 2026-08-25

Adobe Substance3D Designer, a 3D design and content creation application, contains a heap-based buffer overflow vulnerability that can lead to arbitrary code execution when a user opens a malicious file. An attacker could craft a specially-designed file that, when opened by a legitimate user, executes unauthorized code with the privileges of that user, potentially compromising the system and exposing sensitive design assets or data.

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-2026-48432 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48432 being exploited in the wild.

**How severe is CVE-2026-48432?** 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-2026-48432?** 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-2026-48432 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-48432?** 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

This is a heap-based buffer overflow vulnerability in Adobe Substance3D Designer's file parsing logic. The vulnerability occurs when the application processes a malicious file that triggers a buffer overflow in heap memory. The attack requires user interaction—specifically, a victim must open a crafted malicious file for exploitation to occur. Successful exploitation allows an attacker to execute arbitrary code in the context of the current user. No network connectivity is required; the attack surface is limited to local file handling. Adobe has assigned this vulnerability CVE-2026-48432 with a CVSS score of 7.8 (high severity).

## 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)