CVE-2026-21306

Unknown Unknown - Not Provided

Out-of-Bounds Write in Substance3D Sampler Enables Code Execution

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Adobe Systems Incorporated

Description

Substance3D - Sampler versions 5.1.0 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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-13

Last Modified

2026-01-13

Generated

2026-07-06

AI Q&A

2026-01-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-21306

EUVD

EUVD-2026-2045

Affected Vendors & Products

Vendor	Product	Version / Range
adobe	substance3d_sampler	to 5.1.0 (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 vulnerability is an out-of-bounds write in Substance3D - Sampler versions 5.1.0 and earlier. It can allow an attacker to execute arbitrary code with the privileges of the current user. Exploiting this vulnerability requires the victim to open a malicious file, meaning user interaction is necessary.

Impact Analysis

If exploited, this vulnerability can lead to arbitrary code execution on your system with the permissions of the current user. This could allow attackers to perform unauthorized actions such as installing malware, stealing data, or disrupting system operations.

Mitigation Strategies

To mitigate this vulnerability, avoid opening malicious files with Substance3D - Sampler versions 5.1.0 and earlier. Update to a version later than 5.1.0 if available, and ensure users are aware not to open untrusted files. Since exploitation requires user interaction, educating users and applying software updates are key mitigation steps.

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