PDF-XChange Editor 10.5.2.395 U3D File Parser out-of-bounds write

Summaryinfo

A vulnerability identified as critical has been detected in PDF-XChange Editor 10.5.2.395. Affected is an unknown function of the component U3D File Parser. Performing a manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2025-6647. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in PDF-XChange Editor 10.5.2.395. It has been classified as critical. This affects some unknown functionality of the component U3D File Parser. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

PDF-XChange Editor U3D File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26644.

The advisory is shared at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2025-6647 since 06/25/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/02/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-19149). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Document Reader Software

Vendor

• PDF-XChange

Name

• Editor

Version

• 10.5.2.395

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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