CVE-2025-6646

PDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26643.

• CWE-416

• https://www.pdf-xchange.com/support/security-bulletins.htmlVendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-25-431/Third Party Advisory

Published

Jun 25, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-66453Rhino is an open-source implementation of JavaScript written…7.5
• CVE-2025-66454Arcade MCP allows you to to create, deploy, and share MCP Se…6.5
• CVE-2025-66456Elysia is a Typescript framework for request validation, typ…9.8
• CVE-2025-66457Elysia is a Typescript framework for request validation, typ…8.8
• CVE-2025-66458Lookyloo is a web interface that allows users to capture a w…6.1
• CVE-2025-66459Lookyloo is a web interface that allows users to capture a w…6.1
• CVE-2025-66460Lookyloo is a web interface that allows users to capture a w…6.1
• CVE-2025-66461FULLBACK Manager Pro provided by GS Yuasa International Ltd.…8.4
• CVE-2025-66467Missing MinIO policy cleanup on bucket deletion via Apache C…8.1
• CVE-2025-66468The Aimeos GrapesJS CMS extension provides page editor for c…6.1
• CVE-2025-66469NiceGUI is a Python-based UI framework. Versions 3.3.1 and b…6.1
• CVE-2025-6647PDF-XChange Editor U3D File Parsing Out-Of-Bounds Write Remo…7.8