Quick answers
- Is CVE-2026-21365 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21365 being exploited in the wild.
- How severe is CVE-2026-21365?
- Medium severity, with a CVSS score of 5.5, published 10 March 2026.
- Which products and versions are affected?
- Adobe Substance3D Painter 11.1.2 and earlier.
- Is there a fix for CVE-2026-21365?
- 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-2026-21365 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-21365?
- Check whether you run Adobe Substance 3d Painter or Adobe Substance3D Painter 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
The vulnerability is an out-of-bounds read in Substance3D Painter versions 11.1.2 and earlier. The root cause is improper bounds checking when processing file data, allowing access to memory regions outside allocated buffers. Exploitation requires user interaction—a victim must open a malicious file—making it unlikely to be exploited remotely without social engineering. A successful exploit enables an attacker to read arbitrary memory contents, potentially extracting sensitive information such as credentials, session tokens, or project data. Patched versions are expected in Adobe's security update APSB26-25 or later.
Affected products
- Adobe Substance3D Painter 11.1.2 and earlier
Timeline
- 2026-03-10: disclosed
- 2026-03-10: advisory: APSB26-25