Quick answers
- Is CVE-2026-21302 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21302 being exploited in the wild.
- How severe is CVE-2026-21302?
- Medium severity, with a CVSS score of 5.5, published 13 January 2026.
- Which products and versions are affected?
- Adobe Substance3D Modeler 1.22.4 and earlier.
- Is there a fix for CVE-2026-21302?
- 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-2026-21302 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-21302?
- 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
An out-of-bounds read vulnerability exists in Substance3D Modeler's file parsing logic, affecting versions 1.22.4 and earlier. The vulnerability is triggered when a user opens a maliciously crafted 3D file that causes the parser to read memory beyond the intended buffer boundaries. This allows an attacker to read and disclose sensitive information resident in the application's memory, such as session tokens, credentials, or other confidential data. Exploitation requires user interaction (opening a malicious file) and network availability is not required. Adobe has issued patches to remediate this issue.
Affected products
- Adobe Substance3D Modeler 1.22.4 and earlier
Timeline
- 2026-01-13: disclosed: CVE-2026-21302 published