EUVD-2026-65685
GHSA-pw6m-8mw6-c6w5
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-open vector is local (AV:L); attacker needs no system privileges (PR:N); mandatory user interaction (UI:R); full triad from arbitrary code execution in 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 - Painter 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 Painter enables arbitrary code execution at the privilege level of the victim user when a maliciously crafted file is opened. All versions are affected per the wildcard CPE, and Adobe has published advisory APSB26-129 addressing this issue. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim user actively open a malicious file within Adobe Substance 3D Painter - this is the sole and mandatory precondition (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.8 (High) with vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H accurately reflects a file-borne code-execution flaw: attack vector is Local (file must execute on the target system), complexity is Low once the file is opened, no prior privileges are required of the attacker, but user interaction is mandatory. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious Substance 3D Painter project file containing oversized or malformed data designed to overflow a heap buffer during parsing, then delivers it to a target artist or developer via email, a shared asset library, or a compromised file-sharing platform. When the victim opens the file in Substance 3D Painter, the overflow corrupts heap metadata and redirects execution to attacker-controlled shellcode, resulting in code execution as the current user. … |
| Remediation | Apply the patched version of Adobe Substance 3D Painter as specified in Adobe advisory APSB26-129 (https://helpx.adobe.com/security/products/substance3d_painter/apsb26-129.html); the exact fix version is not independently confirmed from the data available here and must be verified against that advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all systems with Substance 3D Painter installed; issue communication to affected users advising against opening files from untrusted external sources; prepare to implement file restrictions on the application. …
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External POC / Exploit Code
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