Quick answers
- Is CVE-2026-103842 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103842 being exploited in the wild.
- How severe is CVE-2026-103842?
- 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-2026-103842?
- 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-2026-103842 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-103842?
- 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
CVE-2026-103842 is an out-of-bounds read (CWE-125) in crafted file parsing that enables arbitrary code execution. The vulnerability requires local attack vector and user interaction (opening a malicious file); no special privileges are needed. The advisory describes a family of 16 memory safety issues (out-of-bounds read/write, use-after-free, stack buffer overflow, and NULL pointer dereference) in file parsing, all allowing code execution or DoS when processing untrusted files.
Affected products
- Adobe Substance 3D Stager 3.1.8 and earlier
Timeline
- 2026-10-13: advisory