CVE-2026-21300 Substance3D - Modeler | NULL Pointer Dereference (CWE-476)
An attacker can cause a denial of service in Substance3D Modeler by tricking a user into opening a malicious file.
- 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-2026-21300?
CVE-2026-21300 is a medium-severity vulnerability in Adobe Substance3D - Modeler, published on 13 Jan 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 - Modeler versions 1.22.4 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to application denial-of-service. 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-2026-21300?
It affects 1 product.
Products include Adobe Substance 3d Modeler.
How do I fix CVE-2026-21300?
No fix has been published for CVE-2026-21300 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21300 being exploited?
There is no known exploitation of CVE-2026-21300 in the wild and no public exploit code.
Other vulnerabilities in Adobe Substance3D - Modeler
- CVE-2026-79906 Substance3D - Modeler | Out-of-bounds Write (CWE-787)
- CVE-2026-81998 Substance3D - Modeler | Out-of-bounds Write (CWE-787)
- CVE-2026-83962 Substance3D - Modeler | Stack-based Buffer Overflow (CWE-121)
- CVE-2026-83963 Substance3D - Modeler | Out-of-bounds Write (CWE-787)
- CVE-2026-21298 Substance3D - Modeler | Out-of-bounds Write (CWE-787)
Sources
Also known as GHSA-jmh4-57fc-8hv9.