High severity · published Feb 25, 2026
CVE-2026-27798
ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images
7.1
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IM
ImageMagick · ImageMagick
< 6.9.13-40; >= 7.0.0, < 7.1.2-15 · source: vendor, NVD
MA
Magick.net · Dlemstra
before 14.10.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27798
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27798
Patch
https://github.com/ImageMagick/ImageMagick/commit/0377e60b3c0d766bd7271221c95d9ee54f6a3738
Vendor Advisory
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qpgx-jfcq-r59f
Product
https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3
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