CVE-2026-103833: Adobe Substance 3D Stager multiple buffer overflow and memory vulnerabilities

CVE-2026-103833 · Severity: high · CVSS 7.8 · Published 2026-10-13

Adobe Substance 3D Stager is a 3D asset creation tool used by designers. A collection of buffer overflow and memory access flaws allow attackers to execute arbitrary code when a victim opens a malicious file. Adobe is not aware of active exploitation, but users should update immediately to mitigate the risk of complete system compromise.

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

Quick answers

Is CVE-2026-103833 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-103833 being exploited in the wild.
How severe is CVE-2026-103833?
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-2026-103833?
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-2026-103833 attacked?
It is attacked with local access, in a software library.
Am I affected by CVE-2026-103833?
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: 3.1.9

Technical details

The vulnerability set includes 16 flaws spanning out-of-bounds writes (CWE-787), out-of-bounds reads (CWE-125), use-after-free (CWE-416), stack-based buffer overflows (CWE-121), and null pointer dereference (CWE-476). All are triggered via malicious file parsing with no authentication required; user interaction (opening a file) is the sole precondition. Exploitation yields arbitrary code execution in the current user context and memory disclosure; a patch to version 3.1.9 is available.

Affected products

  • Adobe Substance 3D Stager 3.1.8 and earlier

Timeline

  • 2026-10-13: disclosed

References

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