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5.3
ImageMagick Memory Leak Can Cause Denial of Service
CVE-2026-25796
GHSA-g2pr-qxjg-7r2w
CVE-2026-25796
Summary
The free ImageMagick software may run out of memory if it processes a large number of images, potentially causing it to stop working. This is due to a weakness in how it handles certain image files. Update to the latest version to prevent this problem.
What to do
- Update magick.net-q16-anycpu to version 14.10.3.
- Update magick.net-q16-hdri-anycpu to version 14.10.3.
- Update magick.net-q16-hdri-openmp-arm64 to version 14.10.3.
- Update magick.net-q16-hdri-openmp-x64 to version 14.10.3.
- Update magick.net-q16-hdri-arm64 to version 14.10.3.
- Update magick.net-q16-hdri-x64 to version 14.10.3.
- Update magick.net-q16-hdri-x86 to version 14.10.3.
- Update magick.net-q16-openmp-arm64 to version 14.10.3.
- Update magick.net-q16-openmp-x64 to version 14.10.3.
- Update magick.net-q16-openmp-x86 to version 14.10.3.
- Update magick.net-q16-arm64 to version 14.10.3.
- Update magick.net-q16-x64 to version 14.10.3.
- Update magick.net-q16-x86 to version 14.10.3.
- Update magick.net-q8-anycpu to version 14.10.3.
- Update magick.net-q8-openmp-arm64 to version 14.10.3.
- Update magick.net-q8-arm64 to version 14.10.3.
- Update magick.net-q8-x64 to version 14.10.3.
- Update magick.net-q8-x86 to version 14.10.3.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| – | magick.net-q16-anycpu | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-hdri-anycpu | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-hdri-openmp-arm64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-hdri-openmp-x64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-hdri-arm64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-hdri-x64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-hdri-x86 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-openmp-arm64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-openmp-x64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-openmp-x86 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-arm64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-x64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q16-x86 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q8-anycpu | <= 14.10.3 | 14.10.3 |
| – | magick.net-q8-openmp-arm64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q8-arm64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q8-x64 | <= 14.10.3 | 14.10.3 |
| – | magick.net-q8-x86 | <= 14.10.3 | 14.10.3 |
| imagemagick | imagemagick | <= 6.9.13-40 | – |
| imagemagick | imagemagick | > 7.0.0-0 , <= 7.1.2-15 | – |
Original title
ImageMagick has memory leak of watermark Image object in ReadSTEGANOImage on multiple error/early-return paths
Original 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, in `ReadSTEGANOImage()` (`coders/stegano.c`), the `watermark` Image object is not freed on three early-return paths, resulting in a definite memory leak (~13.5KB+ per invocation) that can be exploited for denial of service. Versions 7.1.2-15 and 6.9.13-40 contain a patch.
nvd CVSS3.1
7.5
Vulnerability type
CWE-401
Memory Leak
- https://nvd.nist.gov/vuln/detail/CVE-2026-25796
- https://github.com/ImageMagick/ImageMagick/commit/93ad259ce4f6d641eea0bee73f374a...
- https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3
- https://github.com/advisories/GHSA-g2pr-qxjg-7r2w
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-g2pr-qxjg-7r... Vendor Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25796... Vendor Advisory
Published: 24 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026