CVE-2025-21136
Published: 14 January 2025
Summary
CVE-2025-21136 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Adobe Substance 3D Designer. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 34.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Mandates identification, reporting, and correction of flaws like this out-of-bounds write vulnerability via timely patching as detailed in Adobe bulletin APSB25-06.
Implements memory safeguards such as DEP and ASLR to block arbitrary code execution from out-of-bounds write exploits in Substance3D Designer.
Requires vulnerability scanning to identify and prioritize remediation of affected Substance3D Designer versions 14.0 and earlier.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Out-of-bounds write enables arbitrary code execution when victim opens malicious file in client app (T1203 + T1204.002).
NVD Description
Substance3D - Designer versions 14.0 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…
more
open a malicious file.
Deeper analysisAI
CVE-2025-21136 is an out-of-bounds write vulnerability (CWE-787) affecting Adobe Substance3D Designer versions 14.0 and earlier. Published on 2025-01-14, this issue could result in arbitrary code execution in the context of the current user.
The attack requires local access (AV:L) with no privileges (PR:N), but user interaction (UI:R) is necessary, as a victim must open a malicious file. Successful exploitation enables an attacker to achieve high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), with an overall CVSS v3.1 score of 7.8, allowing arbitrary code execution in the user's context.
Mitigation details are provided in Adobe Security Bulletin APSB25-06, available at https://helpx.adobe.com/security/products/substance3d_designer/apsb25-06.html.
Details
- CWE(s)