CVE-2025-6649: pdf-xchange pdf-tools Out-of-bounds Read

Vulnerability summary

CVE-2025-6649 is a low (CVSS 3.3) Out-of-bounds Read vulnerability in pdf-xchange pdf-tools. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.6% of scored vulnerabilities.

Timeline

1. 25-06-2025
   PublishedVulnerability first disclosed.
2. 26-06-2025
   Last modifiedVulnerability information updated.

Description

PDF-XChange Editor U3D File Parsing Out-Of-Bounds Read 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 proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26709.

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.