CVE-2025-6646
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-06-25

Last updated on: 2025-07-01

Assigner: Zero Day Initiative

Description
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.
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Meta Information
Published
2025-06-25
Last Modified
2025-07-01
Generated
2026-05-07
AI Q&A
2025-06-26
EPSS Evaluated
2026-05-05
NVD
EUVD
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
pdf-xchange pdf-tools 10.5.2.395
pdf-xchange pdf-xchange_editor 10.5.2.395
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a use-after-free flaw in the PDF-XChange Editor's U3D file parsing. It occurs because the software does not check if an object exists before operating on it, which can lead to information disclosure. Exploiting it requires user interaction, such as opening a malicious file or visiting a malicious page.


How can this vulnerability impact me? :

An attacker can exploit this vulnerability to disclose sensitive information on affected systems. Additionally, it can be combined with other vulnerabilities to execute arbitrary code within the context of the current process, potentially leading to further compromise.


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