CVE-2026-5939 — MEDIUM (5.5)

Q: What is CVE-2026-5939?

CVE-2026-5939 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

Q: How severe is CVE-2026-5939?

CVE-2026-5939 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-5939?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor, Foxit Pdf Reader.

Vulnerability Description

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 Score

5.5

MEDIUM

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 Products

Vendor	Product	Versions
Foxit	Pdf Editor	>= 14.0.0, < 14.0.4
Foxit	Pdf Reader	< 2026.1.1

Related Weaknesses (CWE)

CWE-416

References

https://www.foxit.com/support/security-bulletins.htmlVendor Advisory

FAQ

What is CVE-2026-5939?

CVE-2026-5939 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

How severe is CVE-2026-5939?

CVE-2026-5939 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-5939?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor, Foxit Pdf Reader.