CVE-2026-5939

MEDIUM 5.5

UAF in Foxit PDF Editor/Reader via XFA calculate event

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

A crafted XFA PDF can trigger a use-after-free condition during calculate event processing, causing the application to crash and resulting in an arbitrary code execution.

CWE	CWE-416
Vendor	foxit software inc.
Product	foxit pdf editor
Published	Apr 27, 2026
Last Updated	Apr 27, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Foxit Software Inc. / Foxit PDF Editor

Versions 2026.1 and earlier Versions 14.0.3 and earlier

Foxit Software Inc. / Foxit PDF Reader

Versions 2026.1 and earlier

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Haein Lee from KAIST Hacking Lab