CVE-2026-21287
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2Description
Substance3D - Stager versions 3.1.5 and earlier are affected by a Use After Free 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.
Analysis
Arbitrary code execution in Substance 3D Stager 3.1.5 and earlier stems from a use-after-free vulnerability that executes with the privileges of the current user. An attacker can exploit this by crafting a malicious file that triggers the vulnerability when opened by a victim, requiring user interaction to activate the attack. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.
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