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7.8

Substance 3D Designer can run malicious code from a crafted file

CVE-2026-21307 · published 9 months ago
Summary

Versions 15.0.3 and earlier of Substance 3D Designer may allow a specially made file to write data outside its intended area, which can let an attacker execute code as the logged‑in user. The attack requires the user to open the malicious file, so it depends on user interaction. Update to the latest version of Substance 3D Designer or avoid opening files from untrusted sources.

What to do
  • Update adobe substance_3d_designer to version 15.1.0 or later.
Affected software
VendorProductAffected versions
adobe substance_3d_designer < 15.1.0
cpe:2.3:a:adobe:substance_3d_designer:*:*:*:*:*:*:*:*
adobe adobe substance 3d designer <= 15.0.3
Original advisory text
Substance3D - Designer | Out-of-bounds Write (CWE-787)
Substance3D - Designer versions 15.0.3 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
7.8 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
Timeline
Published13 Jan 2026
Updated3 Nov 2026
First seen7 Mar 2026
Sources
CVE-2026-21307 · NVD
CVE-2026-21307 · MITRE
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