CVE-2026-28691: ImageMagick has an uninitialized pointer dereference in JBIG decoder

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, an uninitialized pointer dereference vulnerability exists in the JBIG decoder due to a missing check. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 30% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

IM

ImageMagick · ImageMagick

>= 7.0.0, < 7.1.2-16; < 6.9.13-41 · source: vendor, NVD

RH

Red Hat Enterprise Linux 6 · Red Hat

All versions, or not specified · source: CISA

RH

Red Hat Enterprise Linux 7 Extended Lifecycle Support · Red Hat

All versions, or not specified · source: CISA