EUVD-2026-65628
GHSA-qmvv-gq27-v22x
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-open trigger confirms AV:L and UI:R; no attacker privileges needed (PR:N); heap RCE with unchanged scope yields full C:H/I:H/A:H impact.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
Substance3D - Designer 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 Designer enables arbitrary code execution scoped to the victim's user account when a crafted file is opened. The CWE-122 flaw carries a CVSS 7.8 (High) rating with full confidentiality, integrity, and availability impact, making successful exploitation highly damaging despite the required file-open interaction. …
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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 Substance 3D Designer file - user interaction is mandatory (UI:R per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score with vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H presents a nuanced risk profile. … 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 patch issued by Adobe under advisory APSB26-115 (https://helpx.adobe.com/security/products/substance3d_designer/apsb26-115.html). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Adobe Substance 3D Designer and identify file receipt workflows from external sources. …
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External POC / Exploit Code
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