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Fencer Vulns
high 7.5

CVE-2020-13803 json

An issue was discovered in Foxit PhantomPDF Mac and Foxit Reader for Mac before 4.0.

published 2020-06-04 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6018

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

An issue was discovered in Foxit PhantomPDF Mac and Foxit Reader for Mac before 4.0. It allows signature validation bypass via a modified file or a file with non-standard signatures.

Patch / fix

  • foxitsoftware phantompdf 4.0
  • foxitsoftware reader 4.0

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.