CVE-2026-103842 Substance3D - Stager | Out-of-bounds Read (CWE-125)
An attacker can execute arbitrary code by tricking a user into opening a malicious file in Adobe Substance 3D Stager.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-103842?
CVE-2026-103842 is a high-severity memory corruption vulnerability in Adobe Substance 3d Stager, published on 13 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Substance3D - Stager is affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Weakness: CWE-125
Which versions are affected by CVE-2026-103842?
It affects 1 product.
Products include Adobe Substance 3d Stager.
How do I fix CVE-2026-103842?
No fix has been published for CVE-2026-103842 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-103842 being exploited?
There is no known exploitation of CVE-2026-103842 in the wild and no public exploit code.
Other vulnerabilities in Adobe Substance 3d Stager
- CVE-2026-103830 Substance3D - Stager | Stack-based Buffer Overflow (CWE-121)
- CVE-2026-103832 Substance3D - Stager | Out-of-bounds Write (CWE-787)
- CVE-2026-103833 Substance3D - Stager | Out-of-bounds Write (CWE-787)
- CVE-2026-103834 Substance3D - Stager | Out-of-bounds Write (CWE-787)
- CVE-2026-103835 Substance3D - Stager | Out-of-bounds Write (CWE-787)
Sources
Also known as GHSA-85v7-xg2x-pvvr.