{"id":64105,"date":"2025-08-16T21:34:50","date_gmt":"2025-08-16T21:34:50","guid":{"rendered":""},"modified":"2025-08-31T18:37:42","modified_gmt":"2025-09-01T00:37:42","slug":"cve-2025-21165-out-of-bounds-write-vulnerability-in-substance3d-designer-leading-to-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-21165-out-of-bounds-write-vulnerability-in-substance3d-designer-leading-to-arbitrary-code-execution\/","title":{"rendered":"CVE-2025-21165: Out-of-Bounds Write Vulnerability in Substance3D – Designer Leading to Arbitrary Code Execution<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The cybersecurity world has just encountered a notable vulnerability in Substance3D – Designer, versions 14.1 and earlier. This vulnerability, identified as CVE-2025-21165, exposes users to potential system compromise or data leakage due to its out-of-bounds write nature. The vulnerability is of particular concern because it could result in arbitrary<\/a> code execution in the context of the current user. This threat makes it crucial for any organization using Substance3D – Designer<\/a> to understand what this means for their security posture and to take immediate action to mitigate potential risks.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-21165
\nSeverity: High (7.8 CVSS Score)
\nAttack Vector: Malicious file
\nPrivileges Required: User level
\nUser Interaction: Required
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Substance3D – Designer | Versions<\/a> 14.1 and earlier<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of an out-of-bounds write vulnerability<\/a> in Substance3D – Designer. An attacker would craft a malicious file, which, when opened by the user, triggers the vulnerability and allows for arbitrary code<\/a> execution. This arbitrary code<\/a> runs in the context of the user who opens the file, meaning that the attacker can gain the same access rights as the current user. This vulnerability opens the door for potential system compromise or data leakage<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here is a conceptual example of how the vulnerability might be exploited:<\/p>\n

# Create a malicious file with out-of-bounds data that triggers the vulnerability\necho \"out-of-bounds-data\" > malicious_file.designer\n# The user opens the malicious file with Substance3D - Designer\nsubstance3d-designer open malicious_file.designer\n# This triggers the vulnerability and allows for arbitrary code execution<\/code><\/pre>\n
Please note this code is a conceptual representation and not a working example of the exploit.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The best way to mitigate CVE-2025-21165 is to apply the vendor patch. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These can be configured to detect and block attempts to exploit the vulnerability<\/a>. Regular software updates and maintaining a robust security infrastructure are also critical steps in preventing such vulnerabilities<\/a> from being exploited.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity world has just encountered a notable vulnerability in Substance3D – Designer, versions 14.1 and earlier. This vulnerability, identified as CVE-2025-21165, exposes users to potential system compromise or data leakage due to its out-of-bounds write nature. The vulnerability is of particular concern because it could result in arbitrary code execution in the context […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64105","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t