Quick answers
- Is CVE-2026-21299 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21299 being exploited in the wild.
- How severe is CVE-2026-21299?
- High severity, with a CVSS score of 7.8, published 13 January 2026.
- Which products and versions are affected?
- Adobe Substance3D Modeler 1.22.4 and earlier.
- Is there a fix for CVE-2026-21299?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-21299 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-21299?
- Check whether you run Adobe Substance 3d Modeler or Adobe Substance3D Modeler 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.
Technical details
Substance3D Modeler versions 1.22.4 and earlier contain an out-of-bounds write vulnerability in file handling code. The vulnerability is triggered when a victim opens a malicious file, causing memory corruption that can be leveraged for arbitrary code execution with the privileges of the current user. The attack requires user interaction (opening a file) and succeeds in the context of the logged-in user. A patch is available in versions after 1.22.4.
Affected products
- Adobe Substance3D Modeler 1.22.4 and earlier
Timeline
- 2026-01-13: disclosed