EUVD-2026-65630
GHSA-cj7v-2w82-563x
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:L fits the file-open trigger; PR:N because the attacker needs no system credentials; UI:R is mandatory; full C/I/A impact for user-context RCE.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
Substance3D - Designer 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 Designer enables arbitrary code execution in the context of the authenticated local user when a malicious file is opened. The vulnerability is rooted in a memory corruption flaw (CWE-787) triggered during file parsing, giving an attacker full control over code flow within the victim's user session. …
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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 within Adobe Substance 3D Designer - this is the sole, non-negotiable prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High score is driven by the C:H/I:H/A:H impact triad, reflecting full user-context code execution once triggered. … 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 referenced in Adobe security bulletin APSB26-115 at 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 Adobe Substance 3D Designer installations across the organization and identify users in design, marketing, and creative teams who regularly handle external files. …
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Substance3D - Designer crashes on availability when a victim opens a specially crafted malicious file, triggering a NULL
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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