Skip to content
Fencer Vulns
high 7.8

CVE-2020-20740 json

PDFResurrect before 0.20 lack of header validation checks causes heap-buffer-overflow in pdf_get_version().

published 2020-11-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-13520

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

PDFResurrect before 0.20 lack of header validation checks causes heap-buffer-overflow in pdf_get_version().

Patch / fix

  • pdfresurrect_project pdfresurrect 0.20
  • pdfresurrect Debian 14, Debian 13, Debian 12 0.21-1

debian advisories DEBIAN-CVE-2020-20740

  • pdfresurrect Ubuntu Pro 16.04 LTS 0.12-6ubuntu0.2+esm1
  • pdfresurrect Ubuntu Pro 18.04 LTS 0.14-1ubuntu0.1~esm1
  • pdfresurrect Ubuntu Pro 20.04 LTS 0.19-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-20740

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-20740 updated cvss 5.5

pdfresurrect: heap-based buffer overflow in pdf_get_version function due to lack of header validation checks

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/enferex/pdfresurrect/issues/14 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

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.