Adobe Security Bulletin

Security updates available for Substance 3D Sampler | APSB26-121

Bulletin ID

Date Published

Priority

APSB26-121

August 25, 2026

3

Summary

Adobe has released an update for Adobe Substance 3D Sampler.  This update addresses critical vulnerabilities that could result in arbitrary code execution.

Adobe is not aware of any exploits in the wild for any of the issues addressed in this update.

Affected Versions

Product

Version

Platform

Adobe Substance 3D Sampler

6.0.1 and earlier versions

All 

Solution

Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version via the Creative Cloud desktop app's update mechanism.  For more information, please reference this help page.   

Product

Version

Platform

Priority

Availability

Adobe Substance 3D Sampler

6.0.2

All

3

For managed environments, IT administrators can use the Admin Console to deploy Creative Cloud applications to end users. Refer to this help page for more information.  

Vulnerability Details

Vulnerability Category
Vulnerability Impact
Severity
CVSS base score
CVSS vector
CVE Number

Heap-based Buffer Overflow (CWE-122)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48424

Heap-based Buffer Overflow (CWE-122)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48425

Heap-based Buffer Overflow (CWE-122)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48423

Heap-based Buffer Overflow (CWE-122)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48422

Out-of-bounds Write (CWE-787)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48421

Out-of-bounds Write (CWE-787)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48420

Out-of-bounds Write (CWE-787)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48419

Out-of-bounds Write (CWE-787)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48418

Stack-based Buffer Overflow (CWE-121)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-48417

Out-of-bounds Write (CWE-787)

Arbitrary code execution

Critical

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2026-71382

Note
Effective August 11, 2026, Adobe may assign a single CVE identifier to internally discovered vulnerabilities with the same severity rating and CWE category when a release includes systemic fixes.

Acknowledgments:

Adobe would like to thank the following for reporting these issues and for working with Adobe to help protect our customers: 

  • Jony (jony_juice) — CVE-2026-48424, CVE-2026-48425, CVE-2026-48423, CVE-2026-48422, CVE-2026-48421, CVE-2026-48420, CVE-2026-48419, CVE-2026-48418, CVE-2026-48417, CVE-2026-71382

For more information, visit https://helpx.adobe.com/security.html, or email PSIRT@adobe.com

Adobe, Inc.

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