Adobe Substance3D Designer up to 15.1.0 File out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Adobe Substance3D Designer up to 15.1.0. This affects an unknown part of the component File Handler. The manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2026-21334. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Adobe Substance3D Designer up to 15.1.0. It has been classified as critical. Affected is an unknown code block of the component File Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Substance3D - Designer versions 15.1.0 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.

The advisory is shared for download at helpx.adobe.com. This vulnerability is traded as CVE-2026-21334 since 12/12/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/16/2026).

The vulnerability scanner Nessus provides a plugin with the ID 298814 (Adobe Substance 3D Designer <= 15.1.0 Multiple Vulnerabilities (APSB26-19)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (298814). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (adobe): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298814
Nessus Name: Adobe Substance 3D Designer <= 15.1.0 Multiple Vulnerabilities (APSB26-19)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/12/2025 CVE reserved
02/10/2026 +60 days Advisory disclosed
02/10/2026 +0 days VulDB entry created
02/16/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: adobe.com

Advisory: apsb26-19
Status: Confirmed

CVE: CVE-2026-21334 (🔒)
GCVE (CVE): GCVE-0-2026-21334
GCVE (VulDB): GCVE-100-345336

Entryinfo

Created: 02/10/2026 19:57
Updated: 02/16/2026 02:00
Changes: 02/10/2026 19:57 (64), 02/16/2026 02:00 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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