CVE-2026-21342CWE-787

CVE-2026-21342

High · published February 11, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
9.8
In the wild
Unconfirmed
What it is

⚡ Just one rogue file is enough to trigger this out-of-bounds write vulnerability in Substance3D – Stager! 💥 Think of it as a recipe where a chef accidentally adds too much of an ingredient—suddenly, the dish becomes chaotic and unpredictable. In this case, an unsuspecting user opening a malicious file serves as the chef, allowing an attacker to wreak havoc in the system. If exploited, this vulnerability could lead to arbitrary code execution, meaning the attacker could potentially take over the user's machine completely! Imagine someone sneaking in and taking control, accessing your files, or even launching other malware. It's definitely not a scenario anyone wants to face!

Put simply

Think of it as a recipe where a chef accidentally adds too much of an ingredient—suddenly, the dish becomes chaotic and unpredictable. In this case, an unsuspecting user opening a malicious file serves as the chef, allowing an attacker to wreak havoc in the system. This vulnerability allows an out-of-bounds write to occur in versions 3.1.6 and earlier, leading to arbitrary code execution in the context of the current user when a malicious file is opened.

What to do

If exploited, this vulnerability could lead to arbitrary code execution, meaning the attacker could potentially take over the user's machine completely! Imagine someone sneaking in and taking control, accessing your files, or even launching other malware. It's definitely not a scenario anyone wants to face! To safeguard against this vulnerability, update Substance3D – Stager to the latest version immediately. Encourage users to be cautious about opening files from unknown sources, as user interaction is required for exploitation. You've got this! Stay vigilant, keep your software updated, and you'll be a security hero in no time! 🛡️

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
0.00203 · 9.8th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-02-11T00:15Z
Affected products (1)
ProductVersionsFixed in
adobe/substance_3d_stager< 3.1.73.1.7
References (1)
EPSS history
Timeline
  • 10 FEB 18:16Z
    Substance3D - Stager | Out-of-bounds Write (CWE-787)
    cvelistv5