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Fencer Vulns
medium 5.5

CVE-2020-36427 json

GNOME gThumb before 3.10.1 allows an application crash via a malformed JPEG image.

published 2021-07-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23955

cvss
5.5
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 53%
public exploits
0
none known

Summary

GNOME gThumb before 3.10.1 allows an application crash via a malformed JPEG image.

Patch / fix

  • gnome gthumb 3.10.1
  • gthumb Debian 14, Debian 13, Debian 12 3:3.11.1-0.1

debian advisories DEBIAN-CVE-2020-36427

  • gthumb Ubuntu 20.04 LTS 3:3.8.0-2.1ubuntu0.1
  • gthumb Ubuntu Pro 16.04 LTS 3:3.4.3-1ubuntu0.1~esm1
  • gthumb Ubuntu Pro 18.04 LTS 3:3.6.1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-36427

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-2020-36427 updated cvss 5.5

gthumb: DoS via malformed JPEG image

  • Red Hat Enterprise Linux 6 gthumb
    affected: no fix planned “Out of support scope”

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

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

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.