CVE-2026-86421
ImageMagick: ImageMagick: Denial of Service via memory leak in MSL decoder
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 7, 2026
Updated · September 10, 2026
Description
A flaw was found in ImageMagick. A remote attacker could exploit this vulnerability by providing a specially crafted MSL (Magick Scripting Language) image. This triggers memory allocation without proper deallocation, leading to memory exhaustion. Successful exploitation can result in a denial of service (DoS) for the affected system.
Statement
Red Hat has evaluated this issue and determined it is of Low severity. No fix is currently planned for the affected RHEL Extended Life Support versions.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-772 · Missing Release of Resource after Effective Lifetime