PT-2026-2856 · Adobe · Substance3D - Stager

Michele Spagnuolo · Published 2026-01-14 · Updated 2026-02-11 · CVE-2026-21345

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Substance3D - Stager versions 3.1.6 and earlier

Description A flaw exists in Substance3D - Stager that involves an out-of-bounds read when processing a specially crafted file. This could allow an attacker to read beyond the boundaries of allocated memory. Successful exploitation requires a user to open a malicious file and may lead to code execution with the current user's privileges.

Recommendations Update Substance3D - Stager to a version later than 3.1.6.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-01936

CVE-2026-21345

Affected Products

Substance3D - Stager

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-21345 · Security Note
• https://helpx.adobe.com/security/products/substance3d_stager/apsb26-20.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01936 · Security Note
• https://osv.dev/vulnerability/CVE-2026-21345 · Vendor Advisory
• https://t.me/cveNotify/151723 · Telegram Post
• https://twitter.com/socradar/status/2011393817602310286 · Twitter Post