PDF-XChange Editor TrackerUpdate Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

February 19th, 2026
ZDI-26-122 ZDI-CAN-27788

CVE ID

CVE-2026-2040

CVSS Score

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

Affected Vendors

PDF-XChange

Affected Products

PDF-XChange Editor

Vulnerability Details

This vulnerability allows local attackers to escalate privileges on affected installations of PDF-XChange Editor. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the TrackerUpdate process. The product loads a library from an unsecured location. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of a target user.

Additional Details

Fixed in version 10.7.3.401 
https://www.pdf-xchange.com/product/pdf-xchange-editor/history#10.7.3.401


Disclosure Timeline

  • 2025-09-16 - Vulnerability reported to vendor
  • 2026-02-19 - Coordinated public release of advisory
  • 2026-02-19 - Advisory Updated

Credit

Kolja Grassmann (Neodyme AG)

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