CVE-2026-103821 Substance3D Designer - Remote Code Execution

Substance3D Designer contains an out-of-bounds write vulnerability caused by improper memory handling, letting attackers execute arbitrary code in the context of the current user, exploit requires victim to open a malicious file.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.15% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Update to the latest version of Substance3D Designer.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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