Published advisory · ZDI-23-355

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

Published Rocco Calvi
CVSS severity 7.8/ 10.0 · High AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnerability analysis

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 EMF files. Crafted data in a EMF can trigger 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.

Disclosure timeline

  1. Vulnerability reported to vendor
  2. Coordinated public release of advisory

References