Medium 5.5Published Jan 5, 2021

CVE-2020-27843A flaw was found in OpenJPEG in versions prior to 2.4.0.

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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It affects uclouvain openjpeg and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Start free and add your stackFree account, 3 products Every CVE for uclouvain openjpeg Exploited in the last 30 days

A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

uclouvain openjpeg uclouvain:openjpeg	before 2.4.0	NVD
fedoraproject fedora fedoraproject:fedora	32; 33	NVD
oracle outside_in_technology oracle:outside_in_technology	8.5.5	NVD
debian debian_linux debian:debian_linux	9.0; 10.0	NVD

References

References

https://bugzilla.redhat.com/show_bug.cgi?id=1907516	issue-tracking, third-party-advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00006.html	mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
https://security.gentoo.org/glsa/202101-29	third-party-advisory
https://www.debian.org/security/2021/dsa-4882	third-party-advisory
https://www.oracle.com//security-alerts/cpujul2021.html	patch, third-party-advisory
https://www.oracle.com/security-alerts/cpuApr2021.html	patch, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.