EUVD-2026-65638
GHSA-262r-gh7x-jh44
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-triggered local exploitation requires no privileges (PR:N) but mandatory user interaction (UI:R); full C/I/A reflects arbitrary code execution with no scope change.
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 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 Sampler enables arbitrary code execution under the privileges of the current user when a victim opens a crafted malicious file. The vulnerability is rooted in CWE-122 (Heap-based Buffer Overflow), a memory corruption class that reliably yields code execution primitives in native applications. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim actively open a malicious file within Adobe Substance 3D Sampler - there is no network-listening component or remote attack surface. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score with AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H accurately characterizes this as a high-severity local file-parsing flaw requiring no privileges but mandatory user interaction. … 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 update described in Adobe Security Bulletin APSB26-121 (https://helpx.adobe.com/security/products/substance3d-sampler/apsb26-121.html); the advisory provides the specific fixed version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all Substance 3D Sampler installations across the organization and notify affected users to avoid opening files from untrusted sources; consider disabling the application pending further assessment. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
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External POC / Exploit Code
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