CVE-2020-26519

Name: CVE-2020-26519
Creator: NVD / NIST
Published: 2020-10-02T06:15:12.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2020-26519 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Artifex MuPDF before 1.18.0 has a heap based buffer over-write when parsing JBIG2 files allowing attackers to cause a denial of service.. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

Description

Artifex MuPDF before 1.18.0 has a heap based buffer over-write when parsing JBIG2 files allowing attackers to cause a denial of service.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

1.02%

59.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Artifex	Mupdf	< 1.18.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33

References

http://git.ghostscript.com/?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
https://bugs.ghostscript.com/show_bug.cgi?id=702937Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00012.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJJ4H5UUMKK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH5XWV4PABG/
https://security.gentoo.org/glsa/202105-30Third Party Advisory
https://www.debian.org/security/2020/dsa-4794Third Party Advisory
http://git.ghostscript.com/?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
https://bugs.ghostscript.com/show_bug.cgi?id=702937Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00012.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJJ4H5UUMKK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH5XWV4PABG/
https://security.gentoo.org/glsa/202105-30Third Party Advisory
https://www.debian.org/security/2020/dsa-4794Third Party Advisory

Timeline

Published: Oct 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26519?

Artifex MuPDF before 1.18.0 has a heap based buffer over-write when parsing JBIG2 files allowing attackers to cause a denial of service.

How severe is CVE-2020-26519?

CVE-2020-26519 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26519?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-26519?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST