CVE-2026-103821

Received Received - Intake

Adobe Substance3D Designer Out-of-Bounds Write Vulnerability

Publication date: 2026-10-13

Last updated on: 2026-10-15

Assigner: Adobe Systems Incorporated

Description

Substance3D - Designer is 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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-15

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-103821

Affected Vendors & Products

Vendor	Product	Version / Range
adobe	substance_3d_designer	to 16.0.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability in Adobe Substance 3D Designer. It allows arbitrary code execution with the privileges of the current user. Exploitation requires a victim to open a specially crafted malicious file.

Detection Guidance

Detection requires monitoring for suspicious file parsing activity in Adobe Substance 3D Designer. Check for crashes or unexpected behavior when opening files. Enable application logging if available and review logs for out-of-bounds write errors.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system, potentially leading to data theft, system damage, or unauthorized access. Since it requires user interaction, opening an untrusted file is the primary risk.

Mitigation Strategies

Avoid opening untrusted files in Adobe Substance 3D Designer. Update to the latest patched version if available. Implement application allowlisting to restrict execution of untrusted files. Monitor vendor advisories for patches.

Hi! I’m here to help you understand CVE-2026-103821. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70