CVE-2026-46521CWE-131CWE-252CWE-787CWE-835

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

Medium · published June 10, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
3.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00148 · 3.7th percentile
Weaknesses
CWE-131 · Incorrect Calculation of Buffer Size; CWE-252 · Unchecked Return Value; CWE-787 · Out-of-bounds Write; CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-06-10T21:40Z
EPSS history
Timeline
  • 10 JUN 21:40Z
    ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression
    cvelistv5