CVE-2026-40310 PUBLISHED

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

Assigner: GitHub_M
Reserved: 10.04.2026 Published: 13.04.2026 Updated: 13.04.2026

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.

Metrics

CVSS 3.1

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

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	ImageMagick
Product	ImageMagick
Versions	Version < 7.1.2-19 is affected Version < 6.9.13-44 is affected

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-pwg5-6jfc-crvh
https://github.com/ImageMagick/ImageMagick/commit/3d653bea2df085c728a1c8f775808e1e9249dff9
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0

Problem Types

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