Is CVE-2026-34684 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34684 being exploited in the wild.

How severe is CVE-2026-34684?

High severity, with a CVSS score of 7.8, published 12 May 2026.

Which products and versions are affected?

Adobe Substance 3d Designer 15.1.0 and earlier.

Is there a fix for CVE-2026-34684?

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-2026-34684 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-34684?

Check whether you run Adobe Substance 3d Designer 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.

CVE-2026-34684: Adobe Substance 3D Designer out-of-bounds write

CVE-2026-34684 · Severity: high · CVSS 7.8 · Published 2026-05-12

Adobe Substance 3D Designer, a professional tool for creating 3D materials and textures, is affected by a security flaw that could allow an attacker to take control of a user's computer. To exploit this, an attacker would need to trick a user into opening a specially crafted malicious file. Successful exploitation could lead to unauthorized data access or the installation of malicious software.

Technologies: Adobe Substance 3d Designer. Vendors: Adobe.

Quick answers

Is CVE-2026-34684 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34684 being exploited in the wild.
How severe is CVE-2026-34684?: High severity, with a CVSS score of 7.8, published 12 May 2026.
Which products and versions are affected?: Adobe Substance 3d Designer 15.1.0 and earlier.
Is there a fix for CVE-2026-34684?: 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-2026-34684 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-34684?: Check whether you run Adobe Substance 3d Designer 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 write vulnerability (CWE-787) exists in Adobe Substance 3D Designer versions 15.1.0 and earlier. The flaw is triggered when the application processes a specially crafted file, leading to memory corruption. An attacker can leverage this to execute arbitrary code in the context of the current user. Exploitation requires local access and user interaction (opening a malicious file). Adobe has addressed this in advisory APSB26-52.

Affected products

Adobe Substance 3D Designer 15.1.0 and earlier

Timeline

2026-05-12: disclosed
2026-05-12: advisory

References

https://helpx.adobe.com/security/products/substance3d_designer/apsb26-52.html

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