PDF-XChange Editor 10.5.2.395 App Object use after free

Summaryinfo

A vulnerability, which was classified as critical, has been found in PDF-XChange Editor 10.5.2.395. This affects an unknown function of the component App Object Handler. The manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2025-6661. 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 rated as critical. This issue affects an unknown functionality of the component App Object Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

PDF-XChange Editor App Object Use-After-Free 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 handling of App objects. 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-26823.

The advisory is shared at zerodayinitiative.com. The identification of this vulnerability is CVE-2025-6661 since 06/25/2025. The exploitation is known to be easy. The attack may be initiated remotely. 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 06/26/2025).

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• PDF-XChange

Name

• Editor

Version

• 10.5.2.395

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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