CVE-2025-0903

PDF-XChange Editor RTF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID CVE-2025-0903

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 RTF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS

Fixed in version 10.4.2.390 https://www.pdf-xchange.com/support/security-bulletins.html

DISCLOSURE TIMELINE

2024-10-01 - Vulnerability reported to vendor

2025-01-31 - Coordinated public release of advisory

2025-01-31 - Advisory Updated

CREDIT Rocco Calvi (@TecR0c) with TecSecurity