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Adobe Security Bulletin

Last updated on Sep 3, 2026

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

Bulletin ID
Date published
Priority
APSB26-121
August 25, 2026
3
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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
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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.

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.

Product
Version
Platform
Priority
Availability
Adobe Substance 3D Sampler
6.0.3
All
3
Release Notes
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Vulnerability Details

Vulnerability impact
Severity
CVSS base score
CVSS vector
CVE number
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-2026-83959
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.

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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, CVE-2026-83959

NOTE: Adobe has a public bug bounty program with HackerOne. If you are interested in working with Adobe as an external security researcher, please check out https://app.intigriti.com/programs/adobe/adobepublic/detail.

For more information, visit https://www.adobe.com/trust/security/bug-bounty.html, or email PSIRT@adobe.com.