What is CVE-2021-3443?

CVE-2021-3443 is a medium-severity vulnerability in Jasper Project, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-03-25.

How severe is CVE-2021-3443?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Jasper Project

CVE-2021-3443

A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.27 handled component references in the JP2 image format decoder. A specially crafted JP2 image file could cause an application using the Jasper library to crash when opened.

Published 2021-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (53.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Jasper Project
Fedoraproject Fedora — versions 33
Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
Jasper — versions jasper 2.0.27

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-3443?: CVE-2021-3443 is a medium-severity vulnerability in Jasper Project, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-03-25.
How severe is CVE-2021-3443?: Medium severity. CVSS v3 base score is 5.5 out of 10.