Vulnerability · Published Apr 27, 2026 · Assigned by Foxit
CVE-2026-5939UAF in Foxit PDF Editor/Reader via XFA calculate event
Medium 5.5
In plain English
A medium-severity use-after-free in Foxit PDF Editor from Foxit Software Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 98.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Foxit Software Inc. | Foxit PDF Editor | Versions 2026.1 and earlierVersions 14.0.3 and earlier |
| Foxit Software Inc. | Foxit PDF Reader | Versions 2026.1 and earlier |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H