High 7.8Published Mar 4, 2022

CVE-2021-3575A heap-based buffer overflow was found in openjpeg in color.c:379:42 in sycc420_to_rgb when decompressing a crafted .j2k file.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects uclouvain openjpeg and 2 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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A heap-based buffer overflow was found in openjpeg in color.c:379:42 in sycc420_to_rgb when decompressing a crafted .j2k file. An attacker could use this to execute arbitrary code with the permissions of the application compiled against openjpeg.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
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 17, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

uclouvain openjpeg uclouvain:openjpeg	through 2.4.0	NVD
redhat enterprise_linux redhat:enterprise_linux	6.0; 7.0; 8.0	NVD
fedoraproject fedora fedoraproject:fedora	33; 34	NVD

References

References

https://bugzilla.redhat.com/show_bug.cgi?id=1957616	issue-tracking, third-party-advisory
https://github.com/uclouvain/openjpeg/issues/1347	exploit, issue-tracking, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZ54FGM2IGAP4AWSJ22JKHOPHCR3FGYU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QB6AI7CWXWMEDZIQY4LQ6DMIEXMDOHUP/
https://ubuntu.com/security/CVE-2021-3575	third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/04/msg00002.html

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.