SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-3443

A specially crafted JP2 image file could cause an application using the Jasper library to crash when opened.

MEDIUM 5.5EPSS 0.76%

Does this matter?

Lower severity and a low EPSS score (0.76%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.1
5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
0.76% probability · 55th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-476
Affected
jasper project/jasper · redhat/enterprise linux · fedoraproject/fedora
Source
secalert@redhat.com
EPSS trend
0%3%5%26 October 2026: 0.76%26 October 202626 October 2026

EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.