Advisory Details

April 2nd, 2026

Foxit PDF Reader Update Service Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

CVE ID	CVE-2026-3775
CVSS SCORE	7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Foxit
AFFECTED PRODUCTS	PDF Reader
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on affected installations of Foxit PDF Reader. 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 Foxit Reader Update Service. 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 SYSTEM.
ADDITIONAL DETAILS	Foxit has issued an update to correct this vulnerability. More details can be found at: https://www.foxit.com/support/security-bulletins.html
DISCLOSURE TIMELINE	2025-12-31 - Vulnerability reported to vendor 2026-04-02 - Coordinated public release of advisory 2026-04-02 - Advisory Updated
CREDIT	Erik Egsgard of Field Effect

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