# CVE-2026-21363: Adobe Substance3D Painter NULL pointer dereference

Source: https://junglewise.ai/threats/cve-2026-21363-adobe-substance3d-painter-null-pointer-dereference  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-10. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-21363 · Severity: medium · CVSS 5.5 · Published 2026-03-10

Substance3D Painter is a digital painting and texturing tool used by creative professionals to develop 3D assets. Versions 11.1.2 and earlier contain a NULL pointer dereference flaw that causes the application to crash when opening a specially crafted file. An attacker could exploit this to disrupt an artist's work or production pipeline, resulting in lost productivity and project delays.

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

## Quick answers

**Is CVE-2026-21363 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21363 being exploited in the wild.

**How severe is CVE-2026-21363?** Medium severity, with a CVSS score of 5.5, published 10 March 2026.

**Which products and versions are affected?** Adobe Substance3D Painter 11.1.2 and earlier.

**Is there a fix for CVE-2026-21363?** 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-2026-21363 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-21363?** Check whether you run Adobe Substance 3d Painter or Adobe Substance3D Painter 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 a NULL pointer dereference in Substance3D Painter versions 11.1.2 and earlier. The flaw can be triggered by processing a malicious file, which causes the application to attempt to access memory through an invalid pointer, resulting in a denial-of-service condition (application crash). Exploitation requires user interaction—a victim must open the malicious file in the application. The vulnerability does not allow remote code execution or data theft, only application termination. Adobe has released patches to address this issue.

## Affected products

- Adobe Substance3D Painter 11.1.2 and earlier

## Timeline

- 2026-03-10: disclosed

## References

- [https://helpx.adobe.com/security/products/substance3d_painter/apsb26-25.html](https://helpx.adobe.com/security/products/substance3d_painter/apsb26-25.html)

## Related threats

- [Adobe Substance 3D Painter out-of-bounds read in file parsing](https://junglewise.ai/threats/cve-2026-48380-substance3d-painter-is-affected-by-an-out-of-bounds-read)
- [Adobe Substance 3D Painter stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-48379-substance3d-painter-is-affected-by-a-stack-based-buffer-overflow)
- [Adobe Substance3D Sampler heap buffer overflow](https://junglewise.ai/threats/cve-2026-34674-adobe-substance3d-sampler-heap-buffer-overflow)
- [Adobe Substance3D Painter out-of-bounds write](https://junglewise.ai/threats/cve-2026-75770-adobe-substance3d-painter-out-of-bounds-write)
- [Adobe Substance 3D Painter heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-75769-adobe-substance-3d-painter-heap-based-buffer-overflow)