CVE-2026-27798

ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images

State: Published
Severity: 4.0 Medium
Published: Feb 25, 2026
Updated: Feb 26, 2026
Reserved: Feb 24, 2026

Description

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 occurs when processing an image with small dimension using the `-wavelet-denoise` operator. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

Scores

CVSS	Score	Vector	Source
3.1	4.0 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-125 Out-of-bounds Read
CWE-126 Buffer Over-read

Affected Products

Product	Versions
ImageMagickImageMagick	< 6.9.13-40Affected >= 7.0.0, < 7.1.2-15Affected

References

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