CVE-2025-21167 in Substance3D
Summary
by MITRE • 07/08/2025
Substance3D - Designer versions 14.1 and earlier are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. 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 • 07/08/2025
The vulnerability identified as CVE-2025-21167 affects Substance3D Designer versions 14.1 and earlier, representing a critical out-of-bounds read flaw that exposes sensitive memory regions to potential attackers. This vulnerability resides within the software's file processing mechanisms where improper input validation allows maliciously crafted files to trigger memory access violations. The flaw specifically manifests when the application attempts to read data beyond the allocated buffer boundaries during file parsing operations, creating opportunities for unauthorized memory disclosure that could reveal critical system information.
The technical implementation of this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions where software accesses memory locations beyond the intended buffer limits. Attackers can exploit this weakness by crafting specially designed files that, when opened by an unsuspecting user, trigger the vulnerable code path. The out-of-bounds read behavior creates a potential information disclosure channel that could expose memory addresses, stack contents, or other sensitive data that would normally remain protected. This memory exposure represents a significant concern for security mitigations like ASLR, which relies on unpredictable memory layouts to prevent exploitation.
The operational impact of CVE-2025-21167 extends beyond simple information disclosure, as it enables sophisticated attack vectors that could bypass modern security protections. When an attacker successfully exploits this vulnerability, they can potentially gather enough memory layout information to defeat ASLR protections that are fundamental to modern exploit resistance mechanisms. This capability significantly increases the effectiveness of subsequent exploitation attempts, as attackers no longer need to perform expensive brute-force attacks to discover memory layouts. The vulnerability requires user interaction for exploitation, meaning victims must actively open malicious files, but this social engineering requirement does not eliminate the serious security implications.
The attack surface for this vulnerability is primarily limited to users who open files in Substance3D Designer, making it particularly concerning for creative professionals who frequently handle third-party design assets. The exploitation process typically involves preparing a malicious file that triggers the out-of-bounds read condition when processed by the vulnerable software. Security researchers have identified that this vulnerability could be leveraged in combination with other techniques to achieve remote code execution, making it a potentially severe threat to affected systems. Organizations using Substance3D Designer should consider this vulnerability as part of their broader security posture assessment.
Mitigation strategies for CVE-2025-21167 focus on both immediate protective measures and long-term remediation approaches. The most effective immediate solution involves updating to Substance3D Designer version 14.2 or later, which contains patches specifically addressing the out-of-bounds read vulnerability. System administrators should also implement strict file validation policies and consider sandboxing techniques to limit potential impact from malicious files. Additionally, organizations should monitor for any signs of exploitation attempts and maintain updated threat intelligence regarding similar vulnerabilities in creative software applications. The ATT&CK framework categorizes this vulnerability under T1203, which covers exploitation for privilege escalation through memory corruption techniques, emphasizing the need for comprehensive security measures beyond simple patching.
Organizations should also consider implementing network-based protections such as intrusion detection systems that can identify suspicious file processing patterns associated with this vulnerability. Security teams should conduct thorough risk assessments to determine which systems are potentially affected and prioritize patching efforts accordingly. The vulnerability's requirement for user interaction provides an opportunity for security awareness training to help prevent successful exploitation attempts. Regular security audits and vulnerability scanning should include checks for this specific flaw to ensure complete coverage of potential attack vectors.