Medium severity · published Apr 27, 2026
CVE-2026-5939
UAF in Foxit PDF Editor/Reader via XFA calculate event
5.5
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FP
Foxit PDF Editor · Foxit Software Inc.
Versions 2026.1 and earlier; Versions 14.0.3 and earlier · source: vendor
FP
Foxit PDF Reader · Foxit Software Inc.
Versions 2026.1 and earlier · source: vendor
PE
Pdf Editor · Foxit
14.0.0 before 14.0.4; 2023.0.0 before 2026.1.1 · source: NVD
PR
Pdf Reader · Foxit
before 2026.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5939
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5939
Vendor Advisory
https://www.foxit.com/support/security-bulletins.html
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