Vulnerability · Published Jul 1, 2026 · Assigned by GitHub_M
CVE-2026-55597ImageMagick: Heap Buffer Over-Write in JP2 encoder when due to incorrect handling of arguments
Medium 5.5
In plain English
A medium-severity out-of-bounds write 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 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 99.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-26, an incorrect handling of arguments can cause a heap buffer over-write in the JP2 encoder. This issue has been fixed in version7.1.2-26.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | imagemagick | 7.1.2.27-r0 | ALPINE-CVE-2026-55597 |
| Alpine:v3.24 | imagemagick | 7.1.2.27-r0 | ALPINE-CVE-2026-55597 |
| Debian:12 | imagemagick | 8:6.9.11.60+dfsg-1.6+deb12u12 | DEBIAN-CVE-2026-55597 |
| Debian:13 | imagemagick | 8:7.1.1.43+dfsg1-1+deb13u11 | DEBIAN-CVE-2026-55597 |
| Debian:14 | imagemagick | 8:7.1.2.26+dfsg1-1 | DEBIAN-CVE-2026-55597 |
| NuGet | magick.net-q16-anycpu | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-arm64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-hdri-anycpu | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-hdri-arm64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-hdri-openmp-arm64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-hdri-x64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-hdri-x86 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-openmp-arm64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-openmp-x64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-x64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q16-x86 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q8-anycpu | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q8-arm64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q8-openmp-arm64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q8-openmp-x64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q8-x64 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| NuGet | magick.net-q8-x86 | 14.15.0 | GHSA-c4v7-w88g-m6c4 |
| Ubuntu:25.10 | imagemagick | no fix listed | UBUNTU-CVE-2026-55597 |
| Ubuntu:26.10 | imagemagick | no fix listed | UBUNTU-CVE-2026-55597 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ImageMagick | ImageMagick | < 7.1.2-26 |
Weakness: CWE-682, CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H