CVE-2026-27799 MEDIUM

CVE-2026-27799: ImageMagick has a heap Buffer Over-read in its DJVU image format handler

Vendor Imagemagick
Product ImageMagick
Weakness CWE-122
Published February 25, 2026
Last update February 26, 2026

CVSS base score

4.0/10
Attack vector Local
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability exists in the DJVU image format handler. The vulnerability occurs due to integer truncation when calculating the stride (row size) for pixel buffer allocation. The stride calculation overflows a 32-bit signed integer, resulting in an out-of-bounds memory reads. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
February 26, 2026 Record updated