# CVE-2026-21364: Adobe Substance 3D Painter NULL pointer dereference

Source: https://junglewise.ai/threats/cve-2026-21364-adobe-substance-3d-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-2026-21364 · Severity: medium · CVSS 5.5 · Published 2026-03-10

Substance 3D Painter, a professional 3D painting and texturing application, contains a NULL pointer dereference flaw that crashes the application when processing malicious files. An attacker can craft a malicious project or asset file that, when opened by a user, causes the application to crash, disrupting creative workflows and potentially causing loss of unsaved work.

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

## Quick answers

**Is CVE-2026-21364 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21364 being exploited in the wild.

**How severe is CVE-2026-21364?** Medium severity, with a CVSS score of 5.5, published 10 March 2026.

**Which products and versions are affected?** Adobe Substance 3d Painter 11.1.2 and earlier.

**Is there a fix for CVE-2026-21364?** 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-2026-21364 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-21364?** Check whether you run Adobe Substance 3d 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 Substance 3D Painter versions 11.1.2 and earlier. The flaw occurs when the application processes a malformed or specially crafted file without properly validating pointer references before dereferencing them. Exploitation requires user interaction: a victim must open a malicious file, typically a project or texture asset. A successful exploit results in application crash and denial-of-service, but does not enable code execution or data theft. Adobe has issued security advisory APSB26-25 with patched versions.

## Affected products

- Adobe Substance 3D Painter 11.1.2 and earlier

## Timeline

- 2026-03-10: disclosed
- 2026-03-10: advisory: Adobe security advisory APSB26-25 issued

## 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)