Is CVE-2026-103836 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-103836 being exploited in the wild.

How severe is CVE-2026-103836?

High severity, with a CVSS score of 7.8, 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-2026-103836?

Yes: fixed in Substance 3D Stager 3.1.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-103836 attacked?

It is attacked with local access.

Am I affected by CVE-2026-103836?

Check whether you run Adobe Substance 3d Stager 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.

CVE-2026-103836: Adobe Substance 3D Stager out-of-bounds write in file parsing

CVE-2026-103836 · Severity: high · CVSS 7.8 · Published 2026-10-13

Adobe Substance 3D Stager is a 3D design and rendering application used by creative professionals. Multiple out-of-bounds write vulnerabilities in file parsing allow an attacker to execute arbitrary code on a user's system when a victim opens a malicious 3D model file. An attacker could gain full control of the user's computer, steal sensitive design files, or install malware.

Technologies: Adobe Substance 3d Stager. Vendors: Adobe.

Quick answers

Is CVE-2026-103836 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-103836 being exploited in the wild.
How severe is CVE-2026-103836?: High severity, with a CVSS score of 7.8, 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-2026-103836?: Yes: fixed in Substance 3D Stager 3.1.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-103836 attacked?: It is attacked with local access.
Am I affected by CVE-2026-103836?: Check whether you run Adobe Substance 3d Stager 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: Substance 3D Stager 3.1.9

Technical details

Multiple out-of-bounds write, out-of-bounds read, use-after-free, and stack-based buffer overflow vulnerabilities exist in Substance 3D Stager's file parsing logic (CWE-787, CWE-125, CWE-416, CWE-121). Exploitation requires local network or physical access and user interaction—a victim must open a crafted malicious file in the application. Successful exploitation results in arbitrary code execution in the current user's context with full system privileges. The vulnerabilities are fixed in version 3.1.9.

Affected products

Adobe Substance 3D Stager 3.1.8 and earlier

Timeline

2026-10-13: disclosed
2026-10-13: advisory: Adobe Security Bulletin APSB26-170

References

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

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