Foxit PDF Editor/Reader's signature-validation pop-up reports modified certified documents as valid

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18622
StatePUBLISHED
AssignerFoxit
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-13 07:17:06 UTC
Updated2026-08-13 15:19:35 UTC
DescriptionFoxit PDF Editor/Reader inconsistently alerts users when signature fields are abnormally modified, including alterations to appearance, coordinates, or field duplication. This may mislead users into trusting tampered documents, since the UI cannot accurately reflect the actual integrity status of signatures.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from 14984358-7092-470d-8f34-ade47a7658a2

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

EPSS: 0.001220000 probability, percentile 0.023940000 (date 2026-08-14)

Problem Types: CWE-451 | CWE-451 CWE-451: User Interface (UI) Misrepresentation of Critical Information

VersionSourceTypeScoreSeverityVector
3.114984358-7092-470d-8f34-ade47a7658a2Secondary4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
3.1CNACVSS4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Foxit Software Inc. Foxit PDF Editor affected Versions 2026.1.2 and earlier Windows, MacOS
CNA Foxit Software Inc. Foxit PDF Editor affected Versions 14.0.5 and earlier Windows, MacOS
CNA Foxit Software Inc. Foxit PDF Editor affected Versions 13.2.5 and earlier Windows, MacOS
CNA Foxit Software Inc. Foxit PDF Reader affected Versions 2026.1.2 and earlier Windows, MacOS

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: Enzo da Rosa Brum, Frederico Schardong, and Ricardo Felipe Custódio, all of the Computer Security Laboratory (LabSEC), Federal University of Santa Catarina (UFSC), Brazil (en)

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