Quick answers
- Is CVE-2026-103821 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103821 being exploited in the wild.
- How severe is CVE-2026-103821?
- High severity, with a CVSS score of 7.8, published 13 October 2026.
- Which products and versions are affected?
- Adobe Substance 3d Designer 16.0.5 and earlier.
- Is there a fix for CVE-2026-103821?
- Yes: fixed in 16.0.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-103821 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-103821?
- Check whether you run Adobe Substance 3d Designer, 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: 16.0.7
Technical details
The vulnerability is an out-of-bounds write (CWE-787) that requires user interaction to open a malicious file and no special privileges. Successful exploitation allows arbitrary code execution in the context of the current user. The bulletin also fixes NULL pointer dereferences, stack buffer overflows, and out-of-bounds reads in the same application, all requiring user interaction with malicious files.
Affected products
- Adobe Substance 3D Designer 16.0.5 and earlier
Timeline
- 2026-10-13: disclosed