EUVD-2026-65631
GHSA-jxq3-4h2p-26fw
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-parse trigger requires local file open (AV:L), no privileges needed (PR:N), mandatory victim interaction (UI:R), and full triad impact from code execution (C:H/I:H/A:H).
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 allows arbitrary code execution in the context of the current user when a victim opens a specially crafted malicious file. The vulnerability, tracked under CWE-122, resides in the application's file-parsing logic and affects all versions per Adobe's advisory APSB26-115. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively open a malicious file using Adobe Substance 3D Designer - this is the sole prerequisite stated in the CVE description and reflected in the CVSS UI:R metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High score is calibrated accurately for this class of vulnerability: the local attack vector (AV:L) and required user interaction (UI:R) temper the raw impact, but arbitrary code execution with high confidentiality, integrity, and availability impact (C:H/I:H/A:H) represents meaningful post-exploitation capability. … 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 | The primary remediation is to apply the patch detailed in Adobe security bulletin APSB26-115, available at https://helpx.adobe.com/security/products/substance3d_designer/apsb26-115.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running Adobe Substance 3D Designer and restrict file-opening privileges to essential personnel only; notify security teams and creative departments of the risk. …
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External POC / Exploit Code
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