CVE-2026-46521 MEDIUM

CVE-2026-46521: ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression

Vendor Imagemagick
Product ImageMagick
Weakness CWE-131
Published June 10, 2026
Last update June 11, 2026
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.

Key dates

02Disclosure timeline

June 10, 2026 CVE published
June 11, 2026 Record updated