Foxit PDF Editor/Reader FoxitUpdater Improper Certificate Validation Local Privilege Escalation Vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-91812
StatePUBLISHED
AssignerFoxit
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-23 08:17:13 UTC
Updated2026-09-23 17:58:26 UTC
DescriptionA vulnerability in Foxit PDF Editor/Reader’s update mechanism allows man-in-the-middle attackers to bypass certificate validation and package integrity checks, potentially enabling arbitrary code execution with system privileges.

Risk And Classification

Primary CVSS: v3.1 7.9 HIGH from 14984358-7092-470d-8f34-ade47a7658a2

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

EPSS: 0.001270000 probability, percentile 0.027040000 (date 2026-09-23)

Problem Types: CWE-295 | CWE-295 CWE-295 Improper Certificate Validation

VersionSourceTypeScoreSeverityVector
3.114984358-7092-470d-8f34-ade47a7658a2Secondary7.9HIGHCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
3.1CNACVSS7.9HIGHCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

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 Editor affected Versions 13.2.6 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
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: praydog & kmx00 working with TrendAI Zero Day Initiative (en)

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