Vulnerability · Published Feb 25, 2026 · Assigned by GitHub_M
CVE-2026-27798ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images
Medium 4.0
In plain English
A medium-severity out-of-bounds read in ImageMagick from ImageMagick. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.22 | imagemagick | 7.1.2.15-r0 | ALPINE-CVE-2026-27798 |
| Alpine:v3.23 | imagemagick | 7.1.2.15-r0 | ALPINE-CVE-2026-27798 |
| Alpine:v3.24 | imagemagick | 7.1.2.15-r0 | ALPINE-CVE-2026-27798 |
| Debian:12 | imagemagick | 8:6.9.11.60+dfsg-1.6+deb12u7 | DEBIAN-CVE-2026-27798 |
| Debian:12 | imagemagick | 8:6.9.11.60+dfsg-1.6+deb12u7 | DSA-6159-1 |
| Debian:13 | imagemagick | 8:7.1.1.43+dfsg1-1+deb13u6 | DEBIAN-CVE-2026-27798 |
| Debian:13 | imagemagick | 8:7.1.1.43+dfsg1-1+deb13u6 | DSA-6158-1 |
| Debian:14 | imagemagick | 8:7.1.2.15+dfsg1-1 | DEBIAN-CVE-2026-27798 |
| NuGet | magick.net-q16-anycpu | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-arm64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-hdri-anycpu | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-hdri-arm64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-hdri-openmp-arm64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-hdri-openmp-x64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-hdri-x64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-hdri-x86 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-openmp-arm64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-openmp-x64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-openmp-x86 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-x64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q16-x86 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q8-anycpu | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q8-arm64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q8-openmp-arm64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q8-openmp-x64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q8-x64 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| NuGet | magick.net-q8-x86 | 14.10.3 | GHSA-qpgx-jfcq-r59f |
| Ubuntu:25.10 | imagemagick | no fix listed | UBUNTU-CVE-2026-27798 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ImageMagick | ImageMagick | < 6.9.13-40>= 7.0.0, < 7.1.2-15 |
Weakness: CWE-125, CWE-126 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N