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TI-2026-17191 Aliases CVE-2026-21287GHSA-hw2r-hphv-xj7j

Substance3D - Stager | Use After Free (CWE-416)

Priority LOW 35CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Fix Fixed Substance3D - Stager (Adobe): 3.1.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdobeSubstance3D - Stagerup to 3.1.53.1.6Patch availableCNA
  • Substance3D - Stager VendorAdobe Affected up to 3.1.5 Fixed in 3.1.6 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:adobe:substance_3d_stager:*:*:*:*:*:*:*:*before 3.1.6VulnerableAdobe
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*not specified by NVDRunning onApple
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:adobe:substance_3d_stager:*:*:*:*:*:*:*:* Versions before 3.1.6 Vulnerable ·Adobe
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

  • Fix · CNA Substance3D - Stager (Adobe) Fixed in 3.1.6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21287
  2. 2026-10-03 Alias added: GHSA-hw2r-hphv-xj7j

References

Advisory 1

  • TI-2025-38223 Substance3D - Stager | Integer Underflow (Wrap or Wraparound) (CWE-191) CVSS 3.1HIGH 7.8
  • TI-2025-38222 Substance3D - Stager | Use After Free (CWE-416) CVSS 3.1HIGH 7.8
  • TI-2025-38221 Substance3D - Stager | Out-of-bounds Read (CWE-125) CVSS 3.1HIGH 7.8
  • TI-2025-28266 Substance3D - Stager | Use After Free (CWE-416) CVSS 3.1HIGH 7.8
  • TI-2025-28265 Substance3D - Stager | Use After Free (CWE-416) CVSS 3.1HIGH 7.8
  • TI-2025-28263 Substance3D - Stager | Use After Free (CWE-416) CVSS 3.1HIGH 7.8
See all 99 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences