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Fencer Vulns
medium 5.3

CVE-2020-26208 json

Heap-buffer-overflow in jhead

published 2022-02-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18833

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

JHEAD is a simple command line tool for displaying and some manipulation of EXIF header data embedded in Jpeg images from digital cameras. In affected versions there is a heap-buffer-overflow on jhead-3.04/jpgfile.c:285 ReadJpegSections. Crafted jpeg images can be provided to the user resulting in a program crash or potentially incorrect exif information retrieval. Users are advised to upgrade. There is no known workaround for this issue.

Patch / fix

  • jhead_project jhead 3.04
  • jhead Debian 14, Debian 13, Debian 12 1:3.04-6

debian advisories DEBIAN-CVE-2020-26208

  • jhead Ubuntu 18.04 LTS 1:3.00-8~ubuntu0.1
  • jhead Ubuntu 20.04 LTS 1:3.04-1ubuntu0.1
  • jhead Ubuntu Pro 14.04 LTS 1:2.97-1+deb8u2ubuntu0.1~esm1
  • jhead Ubuntu Pro 16.04 LTS 1:3.00-4+deb9u1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-26208

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-2020-26208 updated cvss 5.3

jhead: heap-buffer-overflow in ReadJpegSections

  • 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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/jhead/+bug/1900821 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/F-ZhaoYang/jhead/security/advisories/GHSA-7pr6-xq4f-qhgc referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/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.