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Vulnerability record · CVE-2021-31461 · published 7 May 2021

CVE-2021-31461: Foxitsoftware phantompdf type confusion vulnerability

Foxitsoftware · Phantompdf

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the the handling of app.media objects. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process Was ZDI-CAN-13333.

7.8 CVSS 3.1 High EPSS 4.3% · top 9.2% CWE-843 · Type confusion
7.8CVSS 3.1 base score, v2 6.8
4.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the the handling of app.media objects. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process Was ZDI-CAN-13333.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.php PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-550/ Third Party AdvisoryVDB Entry
https://www.foxitsoftware.com/support/security-bulletins.php PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-550/ Third Party AdvisoryVDB Entry

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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-2021-31461), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.