EUVD-2026-65646
GHSA-g68j-gqmw-f6xw
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-parsing trigger requires local UI:R; no system privileges needed to open a file; full code execution yields C:H/I:H/A:H 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 in the context of the logged-in user when a victim opens a specially crafted malicious file. The attack surface is local - an attacker must deliver and persuade a target to open a weaponized file, a pattern consistent with spear-phishing or watering-hole distribution targeting creative professionals. …
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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 using Adobe Substance 3D Sampler - this is confirmed by the description and reflected in CVSS UI:R. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score is consistent with a local, user-interaction-required file-parsing vulnerability with full code execution impact (C:H/I:H/A:H). … 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 detailed in Adobe Security Bulletin APSB26-121 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: Restrict or disable access to Adobe Substance 3D Sampler across the organization and notify all users to avoid opening design files from untrusted sources. …
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External POC / Exploit Code
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