CVE-2026-40310

ImageMagick: Heap out-of-bounds write in JP2 encoder

State: Published
Severity: 5.5 Medium
Published: Apr 13, 2026
Updated: Apr 14, 2026
Reserved: Apr 10, 2026

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions below both 7.1.2-19 and 6.9.13-44, contain a heap out-of-bounds write in the JP2 encoder with when a user specifies an invalid sampling index. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-122 Heap-based Buffer Overflow
CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
ImageMagickImageMagick	< 7.1.2-19Affected < 6.9.13-44Affected

References

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