What is CVE-2026-3777?

CVE-2026-3777 is a medium-severity vulnerability in Foxit Software Inc. Pdf Editor, classified under Use After Free. CVSS score: 5.5/10. Published 2026-04-01.

How severe is CVE-2026-3777?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Use After Free in Foxit Software Inc. Pdf Editor

CVE-2026-3777

The application does not properly validate the lifetime and validity of internal view cache pointers after JavaScript changes the document zoom and page state. When a script modifies the zoom property and then triggers a page change, the o…

Vulnerability class: Use-After-Free

EPSS: 0.000 (4.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Foxit Software Inc. Pdf Editor — versions Versions 2025.3 and earlier, Versions 14.0.2 and earlier, Versions 13.2.2 and earlier
Foxit Software Inc. Pdf Reader — versions Versions 2025.3 and earlier

Weakness classification (CWE)

CWE-416 — Use After Free

References

www.foxit.com/support/security-bulletins.html

Frequently asked questions

What is CVE-2026-3777?: CVE-2026-3777 is a medium-severity vulnerability in Foxit Software Inc. Pdf Editor, classified under Use After Free. CVSS score: 5.5/10. Published 2026-04-01.
How severe is CVE-2026-3777?: Medium severity. CVSS v3 base score is 5.5 out of 10.