EUVD-2026-65635
GHSA-h94c-xr4c-wqfm
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File must be opened locally (AV:L), no attacker privileges needed to craft the file (PR:N), victim must actively open it (UI:R), full RCE impact scoped to user context (C/I/A:H, S:U).
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
Substance3D - Designer is affected by a Heap-based Buffer Overflow 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
Heap-based buffer overflow in Adobe Substance 3D Designer enables arbitrary code execution at the privilege level of the logged-in user when a victim opens a specially crafted malicious file. The flaw (CWE-122) resides in the application's file parsing subsystem, where insufficient bounds validation permits heap memory corruption that an attacker can leverage to redirect execution flow. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The sole condition required for exploitation is that a victim with Adobe Substance 3D Designer installed actively opens a specially crafted malicious file - explicitly stated in the CVE description and reflected in UI:R in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score with vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H correctly captures a file-parsing RCE that is severe but bounded in reach - AV:L and UI:R together mean opportunistic mass exploitation is not viable without both file delivery and victim action. … 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 | Apply the vendor-issued patch documented in Adobe advisory APSB26-115 at https://helpx.adobe.com/security/products/substance3d_designer/apsb26-115.html - the exact patched version must be confirmed from that advisory, as no specific fix version was present in the available intelligence and none has been independently verified. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Adobe Substance 3D Designer installations in your environment and determine which users handle externally-sourced or untrusted files. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
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External POC / Exploit Code
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