CVE-2026-75750 in Substance 3D Painter
Summary
by MITRE • 08/25/2026
Substance3D - Painter is 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.
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Analysis
by VulDB Data Team • 08/25/2026
The identified vulnerability represents a critical security flaw within Substance 3D Painter, specifically manifesting as a heap-based buffer overflow condition. This type of memory corruption error occurs when the application writes data beyond the allocated boundaries of a dynamically allocated block on the computer's heap. The root cause typically stems from insufficient validation or bounds checking during the processing of input files, allowing an attacker to overwrite adjacent memory structures with carefully crafted malicious payloads. In the context of modern operating systems and software architectures, such overflows are particularly dangerous because they can corrupt critical data structures like function pointers or exception handlers located in nearby memory regions. When these overwritten values are subsequently dereferenced by the application during normal execution flow, control is diverted to attacker-controlled code rather than legitimate program logic.
The operational impact of this vulnerability is severe, as it directly facilitates arbitrary code execution within the security context of the current user. This means that if a victim opens a specially crafted malicious file designed to exploit this flaw, an adversary can execute commands with the same privileges as the authenticated user running Substance 3D Painter. Depending on the configuration and permissions assigned to the user account, this could lead to full system compromise, including the installation of malware, theft of sensitive data such as project files or credentials stored locally, and lateral movement within a corporate network if the compromised machine is part of an active directory environment. The requirement for user interaction, specifically opening the malicious file, classifies this as a client-side attack vector that relies on social engineering tactics to trigger the exploit chain.
From a classification perspective, this vulnerability aligns with Common Weakness Enumeration (CWE) identifiers such as CWE-120 Buffer Overflow without NULL Check and CWE-787 Out-of-bounds Write. These categories highlight the fundamental failure in memory management practices where input data is not properly sanitized or length-checked before being copied into fixed-size buffers on the heap. Furthermore, from a tactical standpoint related to the MITRE ATT&CK framework, this vulnerability supports techniques associated with Initial Access via Spearphishing Attachment (T1566) and Execution via User Interaction (T1204). The exploitation path involves tricking the user into opening a file that triggers the memory corruption, leading potentially to Command and Scripting Interpreter execution or DLL side-loading if further post-exploitation steps are taken.
Mitigation strategies for this vulnerability primarily involve immediate patching by updating Substance 3D Painter to the latest version released by Adobe, which should include fixes for heap validation logic and improved input sanitization routines. Until patches are applied, organizations can implement application whitelisting policies to restrict the execution of untrusted binaries or scripts that might be dropped during exploitation attempts. Additionally, deploying endpoint detection and response (EDR) solutions with behavioral analysis capabilities can help identify anomalous memory access patterns indicative of heap overflow exploits in real-time. Users should also exercise caution when opening files from unknown sources, ensuring that file extensions are verified and not hidden by the operating system to prevent accidental execution of malicious payloads disguised as legitimate 3D model or texture files.