CVE-2026-34709: Substance3D - Sampler | Out-of-bounds Write (CWE-787)
Substance3D - Sampler versions 6.0.0 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Block or scan incoming files from untrusted sources (email attachments, web downloads, file shares) using gateway/antivirus/secure email solutions to reduce the likelihood that a malicious file reaches users, since exploitation requires opening a malicious file.
- Compensating control
Isolate Substance3D Sampler by running it in a sandbox, restricted VM, or otherwise confined environment to limit the impact of potential arbitrary code execution.
- Compensating control
Restrict which users can open untrusted files and restrict access to the application's installation and file-handling features via ACLs or endpoint controls.
- Operational
Notify users and administrators that Substance3D Sampler (versions 6.0.0 and earlier) is vulnerable and instruct users to avoid opening files from untrusted or unknown sources until a vendor fix is available.
- Operational
If a user has opened a suspicious file, isolate the affected system(s) and perform incident response steps (investigate, contain, remediate, and restore) to determine and limit any compromise.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34709?
CVE-2026-34709 has a high severity rating of 7.8.
How do I fix CVE-2026-34709?
To mitigate CVE-2026-34709, update Adobe Substance 3D Sampler to version 6.0.1 or later.
What types of impacts can CVE-2026-34709 cause?
CVE-2026-34709 can lead to arbitrary code execution, which may compromise user data and system integrity.
What versions of Adobe Substance 3D Sampler are vulnerable to CVE-2026-34709?
Adobe Substance 3D Sampler versions 6.0.0 and earlier are affected by CVE-2026-34709.
What is required for the exploitation of CVE-2026-34709?
Exploitation of CVE-2026-34709 requires user interaction, specifically opening a malicious file.