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Vulnerability record · CVE-2020-26534 · published 2 October 2020

CVE-2020-26534: Foxitsoftware foxit reader use after free vulnerability

Foxitsoftware · Foxit Reader

An issue was discovered in Foxit Reader and PhantomPDF before 10.1. There is an Opt object use-after-free related to Field::ClearItems and Field::DeleteOptions, during AcroForm JavaScript execution.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.7% CWE-416 · Use after free
9.8CVSS 3.1 base score, v2 7.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Foxit Reader and PhantomPDF before 10.1. There is an Opt object use-after-free related to Field::ClearItems and Field::DeleteOptions, during AcroForm JavaScript execution.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.foxitsoftware.com/support/security-bulletins.html PatchVendor Advisory
https://www.foxitsoftware.com/support/security-bulletins.html PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-26534), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.