CVE-2026-75752 in Substance 3D Painter
Summary
by MITRE • 08/25/2026
Substance3D - Painter is affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. 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 resides within Substance 3D Painter, a widely used digital painting and texturing software for game development and visual effects production. This specific flaw is classified as an out-of-bounds read, which falls under the Common Weakness Enumeration category CWE-125: Out-of-Bounds Read. In this type of memory corruption issue, the application fails to properly validate input data before accessing a buffer in system memory. Consequently, the software attempts to read from a memory location that lies outside the intended boundary of the allocated buffer. This lack of rigorous bounds checking allows an attacker to force the application to retrieve and potentially expose sensitive information stored adjacent to the targeted buffer, including cryptographic keys, session tokens, or other proprietary data held in volatile memory during normal operation.
From a technical perspective, this vulnerability typically arises when processing complex asset files that contain malformed or specifically crafted metadata structures. When Substance 3D Painter parses these maliciously constructed files, it may miscalculate the size of an array or string based on corrupted header information. Instead of terminating the process with a safe error message, the application proceeds to read memory beyond the allocated limit. This behavior is particularly dangerous because modern operating systems often place sensitive data in close proximity to heap allocations for performance reasons. By carefully crafting the input file, an attacker can control which adjacent memory regions are accessed and subsequently leaked through the application's output mechanisms or crash dumps, leading to a significant information disclosure event that compromises the confidentiality of the user's environment.
The operational impact of this vulnerability is primarily centered on unauthorized data access rather than remote code execution or system compromise. While out-of-bounds reads do not directly allow an attacker to execute arbitrary commands on the victim's machine, they provide a powerful vector for reconnaissance and credential theft. If sensitive credentials are cached in memory during authentication processes with cloud services or asset libraries, their exposure could lead to account takeover. Furthermore, disclosure of internal project data or proprietary textures could result in intellectual property loss for professional artists and studios relying on this software. The risk is exacerbated by the fact that Substance 3D Painter is often used as part of a larger pipeline involving shared assets, meaning leaked information might have broader implications across an organization's security posture if not contained immediately.
Exploitation of this vulnerability requires user interaction, specifically in the form of opening a maliciously crafted file within the application. This aligns with the ATT&CK technique T1204: User Execution, where the adversary relies on the victim to perform actions that facilitate compromise. The attacker must distribute the exploit via phishing emails, compromised websites, or shared network drives containing the poisoned asset files. Once a user opens such a file, the vulnerability is triggered automatically during the parsing phase without requiring additional macros or script execution. This requirement for interaction makes social engineering tactics essential for successful exploitation but also limits the scope to targeted attacks rather than widespread automated worm-like propagation.
To mitigate this risk, users should ensure that their installation of Substance 3D Painter is updated to the latest version provided by Adobe, as vendors typically address such memory safety issues through improved input validation and bounds checking routines in subsequent patches. Organizations should enforce strict software update policies to minimize exposure windows for known vulnerabilities. Additionally, implementing application whitelisting or restricting file execution permissions can help prevent unauthorized applications from interacting with sensitive processes. Security awareness training is also critical to educate users about the risks of opening files from untrusted sources, particularly those related to creative assets which are common vectors for this type of attack. Monitoring system behavior for unusual memory access patterns using endpoint detection and response tools can further aid in identifying potential exploitation attempts before significant data loss occurs.