CVE-2026-21307CWE-787

CVE-2026-21307

High · published January 14, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
7.4
In the wild
Unconfirmed
What it is

⚡ A sneaky out-of-bounds write vulnerability in Substance3D Designer could allow an attacker to execute arbitrary code — and it only takes one click on a malicious file! 🔥 Think of it like a restaurant that serves a dish with an unexpected ingredient — if a chef sneaks something harmful in, the unaware diner could end up in real trouble just by ordering their favorite meal! If exploited, this vulnerability could allow an attacker to run arbitrary code with the privileges of the current user, potentially leading to data theft, unauthorized access, or complete system compromise. A user might think they are just opening a simple project file, only to find themselves in a cyber nightmare!

Put simply

Think of it like a restaurant that serves a dish with an unexpected ingredient — if a chef sneaks something harmful in, the unaware diner could end up in real trouble just by ordering their favorite meal! The out-of-bounds write vulnerability occurs in Substance3D Designer versions 15.0.3 and earlier, allowing attackers to manipulate the application's memory and execute arbitrary code if the user opens a specially crafted file.

What to do

If exploited, this vulnerability could allow an attacker to run arbitrary code with the privileges of the current user, potentially leading to data theft, unauthorized access, or complete system compromise. A user might think they are just opening a simple project file, only to find themselves in a cyber nightmare! To protect yourself, update Substance3D Designer to version 15.0.4 or later immediately. Additionally, inform users not to open any suspicious files and implement security training around file handling. 🛡️ You've got this! By following these steps, you're turning your defenses up to eleven! 💪✨

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00182 · 7.4th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-01-14T01:16Z
Affected products (1)
ProductVersionsFixed in
adobe/substance_3d_designer< 15.1.015.1.0
References (1)
EPSS history
Timeline
  • 13 JAN 20:07Z
    Substance3D - Designer | Out-of-bounds Write (CWE-787)
    cvelistv5