Medium severity · published Feb 10, 2026
CVE-2026-21340
Substance3D - Designer | Out-of-bounds Read (CWE-125)
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
Substance3D - Designer versions 15.1.0 and earlier are affected by an out-of-bounds read vulnerability that could lead to memory exposure. An attacker could leverage this vulnerability to disclose sensitive information stored in memory. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Adobe Substance 3D Designer · Adobe
through 15.1.1 · source: vendor
S3
Substance 3d Designer · Adobe
before 15.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21340
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21340
Vendor Advisory
https://helpx.adobe.com/security/products/substance3d_designer/apsb26-19.html
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