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Fencer Vulns
critical 9.8

CVE-2020-25969 json

gnuplot v5.5 was discovered to contain a buffer overflow via the function plotrequest().

published 2023-07-05 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18599

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

gnuplot v5.5 was discovered to contain a buffer overflow via the function plotrequest().

Patch / fix

  • gnuplot Debian 14, Debian 13 6.0.0+dfsg1-1

debian advisories DEBIAN-CVE-2020-25969

  • gnuplot Ubuntu Pro 14.04 LTS 4.6.4-2ubuntu0.1~esm1
  • gnuplot Ubuntu Pro 16.04 LTS 4.6.6-3ubuntu0.1+esm1
  • gnuplot Ubuntu Pro 18.04 LTS 5.2.2+dfsg1-2ubuntu1+esm1
  • gnuplot Ubuntu Pro 20.04 LTS 5.2.8+dfsg1-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-25969

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

  • gnuplot SLES for SAP 12 SP5, SLES 12 SP5 4.6.5-3.6.1

suse advisories SUSE-SU-2023:3091-1

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-2020-25969 updated cvss 5.3

gnuplot: buffer overflow via the function plotrequest()

  • Red Hat Enterprise Linux 6 gnuplot, emacs-gnuplot, gnuplot-latex, gnuplot-common, gnuplot-minimal, emacs-gnuplot-el
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 gnuplot, emacs-gnuplot, gnuplot-latex, gnuplot-common, gnuplot-minimal, emacs-gnuplot-el Red Hat Enterprise Linux 8 gnuplot, gnuplot-common
    affected: no fix available

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
23 mo ago

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourceforge.net https://sourceforge.net/p/gnuplot/bugs/2311/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.