EUVD-2026-65642
GHSA-8wrf-833x-6f69
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-parsing RCE requires local file open (AV:L, UI:R); attacker needs no system account (PR:N); full code execution yields C:H/I:H/A:H with unchanged scope.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
Substance3D - Sampler is affected by an out-of-bounds write 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
Out-of-bounds write in Adobe Substance 3D Sampler (all versions per CPE) enables arbitrary code execution under the victim's user account. Exploitation is contingent on a victim opening a specially crafted malicious file, introducing a mandatory social engineering dependency. …
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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 malicious file using Adobe Substance 3D Sampler - there is no network-reachable or remotely triggerable attack path independent of this file-open action. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score is driven by high CIA impact reflecting arbitrary code execution, but the attack vector (AV:L) and required user interaction (UI:R) substantially constrain real-world exploitation. … 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 described 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, inventory all Adobe Substance 3D Sampler installations across the organization and identify teams relying on the product for business-critical workflows; simultaneously issue an advisory to all users warning against opening files from untrusted sources and implement content filtering to restrict downloads of 3D model files via email and web browsers. …
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
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External POC / Exploit Code
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