What is CVE-2026-27798?

CVE-2026-27798 is a medium-severity vulnerability in Dlemstra Magick.net, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2026-02-26.

How severe is CVE-2026-27798?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Out-of-bounds Read in Dlemstra Magick.net

CVE-2026-27798

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.

Vulnerability class: Buffer Overflow

Published 2026-02-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001

Affected products

Dlemstra Magick.net
Imagemagick — versions < 6.9.13-40, >= 7.0.0, < 7.1.2-15

Weakness classification (CWE)

References

github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qpgx-jfcq-r59f (Vendor Advisory)
github.com/ImageMagick/ImageMagick/commit/0377e60b3c0d766bd7271221c95d9ee54f6a3… (Patch)
github.com/dlemstra/Magick.NET/releases/tag/14.10.3 (Product, Release Notes)

Frequently asked questions

What is CVE-2026-27798?: CVE-2026-27798 is a medium-severity vulnerability in Dlemstra Magick.net, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2026-02-26.
How severe is CVE-2026-27798?: Medium severity. CVSS v3 base score is 4.0 out of 10.