CVE-2021-41784

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-29 · updated 2026-06-17
Weakness: CWE-416

Description

Foxit PDF Reader before 11.1 and PDF Editor before 11.1, and PhantomPDF before 10.1.6, allow attackers to trigger a use-after-free and execute arbitrary code because JavaScript is mishandled.

Affected products

Foxit PDF Reader: from 11.0 before 11.1 — fixed in 11.1
Foxit Pdf Reader: from 11.0 before 11.1 — fixed in 11.1
Foxit Phantompdf: before 10.1.6 — fixed in 10.1.6

How to fix

Upgrade to a fixed version: Foxit PDF Reader 11.1; Foxit Pdf Reader 11.1; Foxit Phantompdf 10.1.6. Check the vendor advisory for mitigations.

References

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

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