CVE-2020-27842

Name: CVE-2020-27842
Creator: NVD / NIST
Published: 2021-01-05T18:15:14.02+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.44%

Last modified Jun 17, 2026

CVE-2020-27842 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. EPSS estimates a 1.44% chance of exploitation in the next 30 days.

Description

There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability.

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

1.44%

69.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Uclouvain	Openjpeg	< 2.4.0
Fedoraproject	Extra Packages For Enterprise Linux	7.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Redhat	Codeready Linux Builder	8.0
Redhat	Codeready Linux Builder For Ibm Z Systems	8.0
Redhat	Codeready Linux Builder For Power Little Endian	8.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux For Ibm Z Systems	8.0
Redhat	Enterprise Linux For Power Little Endian	8.0
Oracle	Outside In Technology	8.5.5

References

https://bugzilla.redhat.com/show_bug.cgi?id=1907513Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00006.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
https://security.gentoo.org/glsa/202101-29Third Party Advisory
https://www.debian.org/security/2021/dsa-4882Mailing List, Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1907513Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00006.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
https://security.gentoo.org/glsa/202101-29Third Party Advisory
https://www.debian.org/security/2021/dsa-4882Mailing List, Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory

Timeline

Published: Jan 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27842?

How severe is CVE-2020-27842?

CVE-2020-27842 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27842?

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-2020-27842?

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

Scan your code now

Source: NVD / NIST