CVE-2026-103821: Out-of-bounds Write (CWE-787) in Adobe Substance 3D Designer
Description
Substance3D - Designer is 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 v3.1
Score 7.8high
Affected software
Adobe
Substance 3D Designer
pkg:github/adobe/substance3d-designerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103821 is an out-of-bounds write vulnerability in Adobe Substance 3D Designer. This flaw allows an attacker to write outside the bounds of allocated memory, potentially enabling arbitrary code execution in the context of the current user. Successful exploitation requires the victim to open a crafted malicious file, which triggers the vulnerability.
Potential Impact
If exploited, this vulnerability can lead to arbitrary code execution with the privileges of the user running Substance 3D Designer. This could allow an attacker to execute malicious code, compromise the affected system, and potentially escalate privileges depending on the user's rights.
Mitigation Recommendations
No patch or official fix information is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should exercise caution when opening files from untrusted sources to avoid triggering this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- adobe
- Date Reserved
- 2026-10-01T11:23:23.936Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ace998f2cdf04f656ad05b3
Added to database: 10/13/2026, 20:50:23 UTC
Last enriched: 10/13/2026, 22:33:12 UTC
Last updated: 10/14/2026, 04:04:31 UTC
Views: 3
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