CVE-2026-46521
MEDIUM5.5ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression
Published: 5/18/2026Modified: 5/31/2026
Description
When using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check.
Affected packages (19)
- Debian/imagemagickfrom 0
- NuGet/Magick.NET-Q16-AnyCPUfrom 0, < 14.13.1
- NuGet/Magick.NET-Q16-arm64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-HDRI-AnyCPUfrom 0, < 14.13.1
- NuGet/Magick.NET-Q16-HDRI-arm64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-HDRI-OpenMP-arm64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-HDRI-OpenMP-x64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-HDRI-x64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-HDRI-x86from 0, < 14.13.1
- NuGet/Magick.NET-Q16-OpenMP-arm64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-OpenMP-x64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-x64from 0, < 14.13.1
- NuGet/Magick.NET-Q16-x86from 0, < 14.13.1
- NuGet/Magick.NET-Q8-AnyCPUfrom 0, < 14.13.1
- NuGet/Magick.NET-Q8-arm64from 0, < 14.13.1
- NuGet/Magick.NET-Q8-OpenMP-arm64from 0, < 14.13.1
- NuGet/Magick.NET-Q8-OpenMP-x64from 0, < 14.13.1
- NuGet/Magick.NET-Q8-x64from 0, < 14.13.1
- NuGet/Magick.NET-Q8-x86from 0, < 14.13.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |