# CVE-2026-21338: Adobe Substance3D Designer null pointer dereference

Source: https://junglewise.ai/threats/cve-2026-21338-adobe-substance3d-designer-null-pointer-dereference  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-10. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-21338 · Severity: medium · CVSS 5.5 · Published 2026-02-10

Substance3D Designer is Adobe's professional 3D design and modeling tool used by artists and designers. A null pointer dereference vulnerability in versions 15.1.0 and earlier can crash the application when a user opens a malicious file, disrupting work and causing denial of service.

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-2026-21338 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21338 being exploited in the wild.

**How severe is CVE-2026-21338?** Medium severity, with a CVSS score of 5.5, published 10 February 2026.

**Which products and versions are affected?** Adobe Substance3D Designer 15.1.0 and earlier.

**Is there a fix for CVE-2026-21338?** 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-2026-21338 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-21338?** Check whether you run Adobe Substance 3d Designer or Adobe Substance3D 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

This vulnerability is a null pointer dereference flaw in Substance3D Designer versions 15.1.0 and earlier. The vulnerability is triggered when the application attempts to process a specially crafted file, causing it to dereference a null pointer and crash. Exploitation requires user interaction—specifically, a victim must open a malicious file provided by an attacker. This results in a denial-of-service condition where the application terminates unexpectedly. A patch is available in versions later than 15.1.0.

## Affected products

- Adobe Substance3D Designer 15.1.0 and earlier

## Timeline

- 2026-02-10: disclosed

## References

- [https://helpx.adobe.com/security/products/substance3d_designer/apsb26-19.html](https://helpx.adobe.com/security/products/substance3d_designer/apsb26-19.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)