# CVE-2026-48423: Adobe Substance3D Sampler heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-48423-adobe-substance3d-sampler-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-2026-48423 · Severity: high · CVSS 7.8 · Published 2026-08-25

Adobe Substance3D Sampler is a 3D content creation tool used by designers and artists. A heap buffer overflow vulnerability allows attackers to execute arbitrary code on a user's system if they trick the user into opening a malicious file, potentially compromising creative projects, intellectual property, and the underlying workstation.

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

## Quick answers

**Is CVE-2026-48423 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48423 being exploited in the wild.

**How severe is CVE-2026-48423?** High severity, with a CVSS score of 7.8, published 25 August 2026.

**Which products and versions are affected?** Adobe Substance3D Sampler.

**Is there a fix for CVE-2026-48423?** 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-2026-48423 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-48423?** Check whether you run Adobe Substance 3D Sampler or Adobe Substance3D Sampler. 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 heap-based buffer overflow in Adobe Substance3D Sampler that can be triggered by processing a specially crafted file. The issue allows an attacker to overflow a heap buffer, potentially overwriting adjacent memory structures and achieving arbitrary code execution within the context of the logged-in user. Exploitation requires user interaction—a victim must be tricked into opening a malicious file. No public exploits have been reported in the wild as of the advisory date. Patches are expected to be available through Adobe security updates.

## Affected products

- Adobe Substance3D Sampler

## Timeline

- 2026-08-25: disclosed

## References

- [https://helpx.adobe.com/security/products/substance3d-sampler/apsb26-121.html](https://helpx.adobe.com/security/products/substance3d-sampler/apsb26-121.html)

## Related threats

- [Adobe Substance 3D Sampler out-of-bounds write in file parsing](https://junglewise.ai/threats/cve-2026-83966-substance3d-sampler-is-affected-by-an-out-of-bounds-write)
- [Adobe Substance 3D Sampler stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-83965-substance3d-sampler-is-affected-by-a-stack-based-buffer-overflow)
- [Adobe Substance 3D Sampler out-of-bounds read](https://junglewise.ai/threats/cve-2026-100131-substance3d-sampler-is-affected-by-an-out-of-bounds-read)
- [Adobe Substance 3D Sampler out-of-bounds read in memory](https://junglewise.ai/threats/cve-2026-100130-substance3d-sampler-is-affected-by-an-out-of-bounds-read)
- [Adobe Substance3D Sampler heap buffer overflow](https://junglewise.ai/threats/cve-2026-83959-adobe-substance3d-sampler-heap-buffer-overflow)