EUVD-2026-65633
GHSA-6g3p-f4xg-5xg5
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-parsing attack requires local file open (AV:L, UI:R) with no prior privileges; successful exploitation yields full RCE within the user context (C:H/I:H/A:H, S:U).
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Out-of-bounds write in Adobe Substance 3D Designer enables arbitrary code execution in the context of the current user when a specially crafted file is opened. The flaw is a CWE-787 memory corruption in the application's file-parsing pipeline - a class that reliably yields code execution primitives when exploited. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation has a single hard prerequisite: the victim must actively open a specially crafted file in Substance 3D Designer (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High score reflects a local attack vector with mandatory user interaction (AV:L/UI:R), which substantially limits opportunistic exploitation compared to remote, unauthenticated flaws - an attacker cannot scan-and-exploit this vulnerability at scale. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch available per vendor advisory - consult Adobe security bulletin APSB26-115 at https://helpx.adobe.com/security/products/substance3d_designer/apsb26-115.html to obtain the specific fixed version and update instructions; no exact patch version was included in the available intelligence data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, disable file-opening functionality in Substance 3D Designer or restrict access to verified file sources only, and alert game development, VFX, and design teams of the risk. …
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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