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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-91803
StatePUBLISHED
AssignerFoxit
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-23 08:17:12 UTC
Updated2026-10-08 14:05:19 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001160000 probability, percentile 0.014960000 (date 2026-10-08)

Problem Types: CWE-427 | CWE-427 CWE-427: Uncontrolled Search Path Element

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.114984358-7092-470d-8f34-ade47a7658a2Secondary8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Foxit Pdf Editor All All All All
Application Foxit Pdf Editor All All All All
Application Foxit Pdf Editor All All All All
Application Foxit Pdf Editor All All All All
Application Foxit Pdf Editor All All All All
Application Foxit Pdf Editor All All All All
Application Foxit Pdf Reader All All All All
Operating System Microsoft Windows - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Foxit Software Inc. Foxit PDF Editor affected Versions 2026.2 and earlier Windows
CNA Foxit Software Inc. Foxit PDF Editor affected Versions 14.0.7 and earlier Windows
CNA Foxit Software Inc. Foxit PDF Reader affected Versions 2026.2 and earlier Windows

References

ReferenceSourceLinkTags
www.foxit.com/support/security-bulletins.html 14984358-7092-470d-8f34-ade47a7658a2 www.foxit.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Du Yuze (en)

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