EUVD-2026-65639
GHSA-mqfp-h6wg-wpp3
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, UI:R); no attacker privileges required to craft and deliver the file (PR:N); full user-session compromise on successful stack overflow (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 - Sampler is affected by a Stack-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
Stack-based buffer overflow in Adobe Substance 3D Sampler enables arbitrary code execution in the context of the logged-in user. Exploitation is triggered by opening a specially crafted file, making this a file-parsing attack delivered through phishing or malicious asset distribution targeting 3D artists and designers. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively open a specially crafted file in Adobe Substance 3D Sampler - the UI:R CVSS metric confirms this as a hard prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High score with vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H accurately reflects a file-delivery exploitation model: the attacker requires no prior privileges (PR:N) but is limited to local attack vector (AV:L), meaning exploitation occurs entirely on the victim's machine after file delivery. … 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 | Users should apply the patch released by Adobe per advisory APSB26-121, available at https://helpx.adobe.com/security/products/substance3d-sampler/apsb26-121.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, issue a security alert to all Substance 3D Sampler users, restrict opening files from untrusted external sources, and disable the application if business operations permit. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Stack Overflow
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External POC / Exploit Code
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