CVE-2026-34664 Substance3D - Designer | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22)

Medium 6.3 Published 12 May 2026 Updated 27 Aug 2026

An attacker can read sensitive files outside the intended directory by tricking a user into opening a malicious file in Adobe Substance 3D Designer.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-34664?

CVE-2026-34664 is a medium-severity path traversal vulnerability in Adobe Substance 3d Designer, published on 12 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Substance3D - Designer versions 15.1.0 and earlier are affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could lead to arbitrary file system read. An attacker could exploit this vulnerability to access sensitive files and directories outside the intended access scope. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.

Weakness: CWE-22

Which versions are affected by CVE-2026-34664?

It affects 1 product.

Products include Adobe Substance 3d Designer.

How do I fix CVE-2026-34664?

No fix has been published for CVE-2026-34664 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-34664 being exploited?

There is no known exploitation of CVE-2026-34664 in the wild and no public exploit code.

All Adobe Substance 3d Designer vulnerabilities

Sources

Also known as GHSA-r2h3-cfxv-h42g.