CVE-2026-103840

Undergoing Analysis Undergoing Analysis - In Progress

Out-of-Bounds Read in Adobe Substance3D Stager

Publication date: 2026-10-13

Last updated on: 2026-10-15

Assigner: Adobe Systems Incorporated

Description

Substance3D - Stager is affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code 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

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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-2026-103840

EUVD

EUVD-2026-100586

Affected Vendors & Products

Vendor	Product	Version / Range
Adobe	Adobe	Substance 3D Stager 0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read issue in Adobe Substance3D Stager. It occurs when the software processes a specially crafted file, causing it to read memory beyond its allocated buffer. This flaw could allow an attacker to execute arbitrary code with the same privileges as the current user.

Detection Guidance

This vulnerability requires user interaction to exploit, so detection would involve monitoring for suspicious file parsing activities in Adobe Substance 3D Stager. Check for crashes or unusual behavior when opening files. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability could let an attacker run malicious code on your system by tricking you into opening a harmful file. This might lead to unauthorized access, data theft, or system compromise, depending on your user permissions.

Compliance Impact

This vulnerability could potentially lead to unauthorized code execution, which may result in data breaches or unauthorized access to sensitive information. Such incidents could violate compliance requirements under GDPR or HIPAA if personal or health data is exposed.

Mitigation Strategies

Update Adobe Substance 3D Stager to the latest version as soon as patches are available. Avoid opening files from untrusted sources. Enable application sandboxing if supported. Monitor Adobe's security advisories for updates.

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