CVE-2026-91803 PUBLISHED

Security Vulnerability Report – Foxit PDF Editor/Reader Updater DLL Search Path Hijacking

Assigner: Foxit
Reserved: 15.09.2026 Published: 23.09.2026 Updated: 23.09.2026

A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operations. A local attacker could exploit this issue to execute code with elevated privileges.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Local	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Foxit Software Inc.
Product	Foxit PDF Editor
Versions	Default: unaffected Version Versions 2026.2 and earlier is affected Version Versions 14.0.7 and earlier is affected

Vendor	Foxit Software Inc.
Product	Foxit PDF Reader
Versions	Default: unaffected Version Versions 2026.2 and earlier is affected

Credits

Du Yuze finder

References

https://www.foxit.com/support/security-bulletins.html

Problem Types

CWE-427: Uncontrolled Search Path Element CWE

Impacts

Local Privilege Escalation