CVE-2026-21336 Substance3D - Designer | NULL Pointer Dereference (CWE-476)
An attacker can crash Adobe Substance 3D Designer by tricking a user into opening a malicious file, causing a denial of service.
- 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-2026-21336?
CVE-2026-21336 is a medium-severity vulnerability in Adobe Substance 3d Designer, published on 10 Feb 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 - Designer versions 15.1.0 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to crash the application, causing disruption to services. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Weakness: CWE-476
Which versions are affected by CVE-2026-21336?
It affects 1 product.
Products include Adobe Substance 3d Designer.
How do I fix CVE-2026-21336?
No fix has been published for CVE-2026-21336 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21336 being exploited?
There is no known exploitation of CVE-2026-21336 in the wild and no public exploit code.
Other vulnerabilities in Adobe Substance 3d Designer
- CVE-2026-103821 Substance3D - Designer | Out-of-bounds Write (CWE-787)
- CVE-2026-48426 Substance3D - Designer | Out-of-bounds Write (CWE-787)
- CVE-2026-48427 Substance3D - Designer | Out-of-bounds Write (CWE-787)
- CVE-2026-48428 Substance3D - Designer | Heap-based Buffer Overflow (CWE-122)
- CVE-2026-48430 Substance3D - Designer | Heap-based Buffer Overflow (CWE-122)
Sources
Also known as GHSA-x8x6-cpp7-m689.