CVE-2026-48429 in Substance 3D Designer
Summary
by MITRE • 08/25/2026
Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. 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 within Substance 3D Designer represents a critical software defect classified as a NULL Pointer Dereference, which falls under the Common Weakness Enumeration category CWE-476. This specific type of flaw occurs when an application attempts to access memory through a pointer that has not been properly initialized or has been explicitly set to null, leading to undefined behavior and typically resulting in an immediate crash of the executing process. In the context of Substance 3D Designer, this vulnerability is triggered by the parsing and processing of specific file structures embedded within malicious assets created for the software environment. The root cause lies in insufficient input validation or error handling mechanisms during the deserialization or rendering pipeline where expected data pointers are absent but not checked before dereferencing.
From an operational perspective, the primary impact of this vulnerability is a denial-of-service condition affecting the integrity and availability of the application. When the vulnerable code path is executed due to the presence of the crafted malicious file, the application terminates unexpectedly without saving work or providing graceful error recovery. This disruption can lead to significant productivity losses for users relying on the software for professional 3D material creation and texturing workflows. While the immediate effect is limited to local resource exhaustion via process termination, such instability undermines user trust in the stability of the toolset and may cause data loss if auto-save features are not configured or fail during the crash sequence.
The exploitation vector for this vulnerability requires direct user interaction, specifically the act of opening a malicious file within the application interface. This characteristic aligns with attack patterns described in the MITRE ATT&CK framework under techniques involving social engineering or lure-based delivery mechanisms where an adversary tricks a victim into executing code by masquerading as legitimate content. Because exploitation is not remote and does not occur through passive network interaction, the threat landscape is constrained to scenarios where users are targeted individually rather than being susceptible to automated worm-like propagation across networks. This limits the blast radius but necessitates strict user awareness training regarding file sources.
Mitigation strategies for this vulnerability focus primarily on software updates provided by Adobe Systems, which address the underlying memory management errors in the parsing logic. Administrators and end-users should ensure that Substance 3D Designer is updated to the latest patched version where null checks are implemented before pointer dereference operations. Additionally, organizational security policies should enforce strict controls over file ingestion from untrusted sources, leveraging application whitelisting or sandboxing environments to isolate potentially malicious documents from critical production systems until they can be safely analyzed.