Home/CVE/An issue was discovered in Foxit Reader and PhantomPDF before 9.5. It allows signature validation bypass via a modified
CVE

CVE-2019-20837

An issue was discovered in Foxit Reader and PhantomPDF before 9.5. It allows signature validation bypass via a modified

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.

HIGH · CVSS 7.5 EPSS 9e-05
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
▤

Affected Products & Versions

2
foxitsoftware phantompdf< 9.5
foxitsoftware reader< 9.5
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotential Suspicious Browser Launch From Document Reader Process
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Jun 2020 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.foxitsoftware.com/support/security-bulletins.phpPatchVendor Advisory
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