EUVD-2026-70649
GHSA-qg72-3qrw-jcxv
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 privileges required on victim side (PR:N); full user-context code execution justifies C:H/I:H/A:H with no scope change.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
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 within the current user's security context when a victim opens a specially crafted malicious file. The vulnerability resides in file-parsing logic (CWE-122), and successful exploitation grants full C:H/I:H/A:H impact without requiring elevated privileges on the victim's system. …
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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 in Adobe Substance 3D Sampler on their local machine - confirmed by CVSS UI:R (user interaction required) and AV:L (local attack vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score is well-calibrated for this class of vulnerability. … 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 update documented in Adobe security bulletin 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 an urgent security notice to all Substance 3D Sampler users warning against opening 3D files from untrusted sources, and conduct a comprehensive inventory of all installations to document software versions in use. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
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External POC / Exploit Code
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