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HIGH

CVE-2026-91816

CVSS v3

7.8

HIGH

EPSS Score

0.1 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of PDF annotations. Reentrant annotation deletion triggered by embedded JavaScript can cause the application to access an annotation object after it has been released, resulting in a use-after-free condition and application crash.

Technical details

Published
2026-09-23
Last Modified
2026-09-23

Frequently asked questions

What is CVE-2026-91816?

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of PDF annotations. Reentrant annotation deletion triggered by embedded JavaScript can cause the application to access an annotation object after it has been released, resulting in a use-after-free condition and application crash.

Is CVE-2026-91816 actively exploited?

Active exploitation of CVE-2026-91816 has not been confirmed. Its EPSS score was 0.1% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-91816?

CVE-2026-91816 has a CVSS v3 base score of 7.8 (HIGH severity).

Is CVE-2026-91816 affecting your environment?

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