Quick answers
- Is CVE-2026-83959 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83959 being exploited in the wild.
- How severe is CVE-2026-83959?
- High severity, with a CVSS score of 7.8, published 3 September 2026.
- Which products and versions are affected?
- Adobe Substance3D Sampler.
- Is there a fix for CVE-2026-83959?
- 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-2026-83959 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-83959?
- Check whether you run Adobe Substance 3D Sampler or Adobe Substance3D Sampler. 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 Sampler contains a heap-based buffer overflow vulnerability in file parsing that allows arbitrary code execution. The vulnerability is triggered when processing a malicious file, requiring user interaction (opening the file) to exploit. A successful exploit executes code in the context of the current user, potentially leading to system compromise. No evidence of active exploitation in the wild has been reported at this time, and patches should be available from Adobe.
Affected products
- Adobe Substance3D Sampler
Timeline
- 2026-09-03: disclosed