CVE-2026-21306
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
A vulnerability in Substance3D Sampler versions 5.1.0 and earlier is caused by an out-of-bounds write, which could allow arbitrary code execution in the context of the current user. Exploitation requires user interaction, as the victim must open a malicious file.
Risk Assessment
An attacker could take control of the victim's system by executing arbitrary code with the privileges of the logged-in user. The risk is particularly significant in environments where users process untrusted graphic files.
Recommendation
It is recommended to immediately update Substance3D Sampler to the latest available version that includes the fix. Users should also be trained not to open files from unknown or untrusted sources.
Other vulnerabilities in Substance3D Sampler
See all- CVE-2026-34674High
Substance3D - Sampler versions 5.1.3 and earlier are affected by a Heap-based Buffer Overflow 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 open a malicious file.
- CVE-2026-71382High
Substance3D - Sampler is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation requires user interaction - the victim must open a malicious file.
- CVE-2026-48425High
Substance3D - Sampler is affected by a heap-based buffer overflow vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48424High
Substance3D - Sampler is affected by a heap-based buffer overflow vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48423High
Substance3D - Sampler is affected by a heap-based buffer overflow vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48422High
Substance3D - Sampler is affected by a heap-based buffer overflow vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48421High
Substance3D - Sampler is affected by an out-of-bounds write vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48420High
Substance3D - Sampler is affected by an out-of-bounds write vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48419High
Substance3D - Sampler is affected by an out-of-bounds write vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
- CVE-2026-48418High
Substance3D - Sampler is affected by an out-of-bounds write vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
Original NVD description (English source)
Substance3D - Sampler versions 5.1.0 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 open a malicious file.