# CVE-2026-21301: Adobe Substance3D Modeler NULL pointer dereference

Source: https://junglewise.ai/threats/cve-2026-21301-adobe-substance3d-modeler-null-pointer-dereference  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-01-13. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-21301 · Severity: medium · CVSS 5.5 · Published 2026-01-13

Substance3D Modeler is Adobe's 3D design and modeling application used by creative professionals. A NULL pointer dereference flaw in versions 1.22.4 and earlier can crash the application when a user opens a specially crafted malicious file, causing temporary loss of work and disruption to design workflows.

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

## Quick answers

**Is CVE-2026-21301 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21301 being exploited in the wild.

**How severe is CVE-2026-21301?** Medium severity, with a CVSS score of 5.5, published 13 January 2026.

**Which products and versions are affected?** Adobe Substance3D Modeler 1.22.4 and earlier.

**Is there a fix for CVE-2026-21301?** 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-2026-21301 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-21301?** Check whether you run Adobe Substance 3d Modeler or Adobe Substance3D Modeler 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 Modeler version 1.22.4 and earlier. The flaw is triggered when processing a malicious file, leading to application denial-of-service (crash). Exploitation requires user interaction—specifically, a victim must open a crafted file, likely via email, file sharing, or a compromised source. The attacker cannot gain code execution or access sensitive data, but can disrupt availability and potentially cause loss of unsaved work. A patch is expected to be available through Adobe's security advisory.

## Affected products

- Adobe Substance3D Modeler 1.22.4 and earlier

## Timeline

- 2026-01-13: disclosed: Published on NVD
- 2026-01-13: advisory: Adobe APSB26-08 advisory

## References

- [https://helpx.adobe.com/security/products/substance3d-modeler/apsb26-08.html](https://helpx.adobe.com/security/products/substance3d-modeler/apsb26-08.html)

## Related threats

- [Adobe Substance3D Modeler out-of-bounds write](https://junglewise.ai/threats/cve-2026-83963-substance3d-modeler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance3D Modeler stack buffer overflow](https://junglewise.ai/threats/cve-2026-83962-substance3d-modeler-is-affected-by-a-stack-based-buffer-overflow)
- [Adobe Substance3D Modeler out-of-bounds write](https://junglewise.ai/threats/cve-2026-81998-substance3d-modeler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance3D Modeler out-of-bounds write](https://junglewise.ai/threats/cve-2026-79906-substance3d-modeler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance3D Modeler out-of-bounds read](https://junglewise.ai/threats/cve-2026-21348-adobe-substance3d-modeler-out-of-bounds-read)