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Vulnerability record · CVE-2026-91790 · published 23 September 2026

CVE-2026-91790: Use after free vulnerability

When rendering the page image, Foxit PDF Editor/Reader fails to perform validation on image objects whose optional content attributes are malformed. As a result, the program may access an already-freed internal data structure, triggering a crash due to UAF.

7.8 CVSS 3.1 High EPSS 0.13% · top 98.1% CWE-416 · Use after free Awaiting Analysis
7.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
23 Sep 2026Last modified by NVD

Description

When rendering the page image, Foxit PDF Editor/Reader fails to perform validation on image objects whose optional content attributes are malformed. As a result, the program may access an already-freed internal data structure, triggering a crash due to UAF.

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

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-91790), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.