What’s Vulnerable › Vulnerabilities

CVE-2021-33794

• Severity: critical (CVSS 9.1 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: 2021-08-11 · updated 2026-06-17

Description

Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 allow information disclosure or an application crash after mishandling the Tab key during XFA form interaction.

Affected products

• Foxit Reader: before 10.1.4 — fixed in 10.1.4
• Foxit PhantomPDF: before 10.1.4 — fixed in 10.1.4

How to fix

Upgrade to a fixed version: Foxit Reader 10.1.4; Foxit PhantomPDF 10.1.4. Check the vendor advisory for mitigations.

References

• https://www.foxitsoftware.com/support/security-bulletins.html
• https://www.foxitsoftware.com/support/security-bulletins.html

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