#VU102712 Stack-based buffer overflow in Substance 3D Stager - CVE-2025-21128

Vulnerability identifier: #VU102712

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-21128

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Substance 3D Stager
Client/Desktop applications / Multimedia software

Vendor: Adobe

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling files. A remote attacker can trick the victim into opening a specially crafted file, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Substance 3D Stager: 1.0.0 - 3.0.4

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External links
https://helpx.adobe.com/security/products/substance3d_stager/apsb25-03.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.