EUVD-2026-65643
GHSA-6746-v85x-hv7w
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-open exploit requires no attacker privileges; local vector with mandatory user interaction; full C/I/A impact confirmed, scope unchanged to user context.
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 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 enables arbitrary code execution at the privilege level of the logged-in user when a victim opens a specially crafted file. All versions covered by CPE cpe:2.3:a:adobe:adobe_substance_3d_sampler:*:*:*:*:*:*:*:* are listed as affected, with Adobe addressing the issue via advisory APSB26-121. …
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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 - no network-accessible service or listening port is involved. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) accurately reflects a file-parsing RCE with low attack complexity once the victim opens the malicious file. … 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 released by Adobe under advisory APSB26-121, available at https://helpx.adobe.com/security/products/substance3d-sampler/apsb26-121.html; the exact fixed version must be confirmed directly from that bulletin, as the NVD CPE entry uses a wildcard range without specifying a patched release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Adobe Substance 3D Sampler across the organization and immediately alert users not to open project files from untrusted external sources; implement email gateway rules to flag or block common Sampler file extensions (.sbs, associated formats) from external senders. …
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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