PDF-XChange Editor JP2 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

June 25th, 2025
ZDI-25-436 ZDI-CAN-26713

CVE ID

CVE-2025-6651

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

PDF-XChange

Affected Products

PDF-XChange Editor

Vulnerability Details

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 JP2 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 buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

PDF-XChange has issued an update to correct this vulnerability. More details can be found at:
https://www.pdf-xchange.com/support/security-bulletins.html

Disclosure Timeline

  • 2025-03-18 - Vulnerability reported to vendor
  • 2025-06-25 - Coordinated public release of advisory
  • 2025-06-25 - Advisory Updated

Credit

Anonymous

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