# CVE-2026-103850: Adobe Substance 3D Stager out-of-bounds read in file parsing

Source: https://junglewise.ai/threats/cve-2026-103850-substance3d-stager-is-affected-by-an-out-of-bounds-read  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-103850 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Adobe Substance 3D Stager is a 3D design tool used for creating digital assets and materials. An out-of-bounds read vulnerability in its file parser could allow an attacker to expose sensitive data from memory when a victim opens a malicious file. This could leak credentials, encryption keys, or other confidential information stored in the application's memory.

Technologies: [Adobe Substance 3d Stager](https://junglewise.ai/threats/technologies/substance-3d-stager), [Apple macOS](https://junglewise.ai/threats/technologies/macos), [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe), [Apple](https://junglewise.ai/threats/vendors/apple), [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-103850 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103850 being exploited in the wild.

**How severe is CVE-2026-103850?** Medium severity, with a CVSS score of 5.5, published 13 October 2026.

**Which products and versions are affected?** Adobe Substance 3d Stager 3.1.8 and earlier.

**Is there a fix for CVE-2026-103850?** Yes: fixed in 3.1.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103850 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-103850?** Check whether you run Adobe Substance 3d Stager, Apple macOS or Microsoft Windows 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.

## How to fix

- Fixed in 3.1.9

## Technical details

CVE-2026-103850 is an out-of-bounds read (CWE-125) triggered by malicious file parsing in Substance 3D Stager. The vulnerability requires user interaction—a victim must open a specially crafted file—and operates with local attack vector and no elevated privileges. Successful exploitation discloses sensitive memory contents without modifying the system or causing crashes.

## Affected products

- Adobe Substance 3D Stager 3.1.8 and earlier

## Timeline

- 2026-10-13: disclosed

## References

- [https://www.adobe.com/trust/security/products/substance3d-stager/apsb26-170.html](https://www.adobe.com/trust/security/products/substance3d-stager/apsb26-170.html)

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