CVE-2026-27279
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 3.1.7 and earlier are 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.
Analysis
Arbitrary code execution in Substance 3D Stager 3.1.7 and earlier through an out-of-bounds write vulnerability triggered when users open malicious files. An attacker can execute code with the privileges of the affected user, requiring only social engineering to deliver the malicious file. …
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Remediation
Within 24 hours: Identify all instances of Substance3D Stager in use and document affected versions. Within 7 days: Disable file opening functionality if operationally feasible, implement email gateway rules to block suspicious .ssg or related file types, and issue user awareness alert warning against opening untrusted files. …
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External POC / Exploit Code
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