What’s Vulnerable › Vulnerabilities

CVE-2019-20837

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-04 · updated 2026-06-17
• Weakness: CWE-347

Description

An issue was discovered in Foxit Reader and PhantomPDF before 9.5. It allows signature validation bypass via a modified file or a file with non-standard signatures.

Affected products

• Foxit PhantomPDF: before 9.5 — fixed in 9.5
• Foxit Reader: before 9.5 — fixed in 9.5

How to fix

Upgrade to a fixed version: Foxit PhantomPDF 9.5; Foxit Reader 9.5. Check the vendor advisory for mitigations.

References

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

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