CVE-2026-5939

UAF in Foxit PDF Editor/Reader via XFA calculate event

CVSS 5.5 MEDIUMEPSS 0.1%CWE-416

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.5EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

27 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Foxit Software Inc. · Foxit PDF Editor Foxit Software Inc. · Foxit PDF Reader

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References

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