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Vulnerability record · CVE-2021-33793 · published 11 August 2021

CVE-2021-33793: Foxitsoftware foxit reader out-of-bounds write vulnerability

Foxitsoftware · Foxit Reader

Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 have an out-of-bounds write because the Cross-Reference table is mishandled during Office document conversion.

9.8 CVSS 3.1 Critical EPSS 1.1% · top 36.1% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 have an out-of-bounds write because the Cross-Reference table is mishandled during Office document conversion.

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-2021-33793), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.