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

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, Apple macOS, Microsoft Windows. Vendors: Adobe, Apple, 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

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