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CVE-2026-27798

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

Published: 2/25/2026 Last updated: 2/26/2026 Reserved: 2/24/2026

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.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 4 Medium CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Opam packages affected (2)

conf-libMagickCore ocsigen-start

Products affected (1)

Product Vendor Version
ImageMagick ImageMagick <= 5.4.*

References (6)