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MEDIUM severity

ImageMagick has a Heap Buffer Underwrite in the Floyd-Steinberg depth dithering methodGHSA-2hhq-c99x-492r

MEDIUM

GHSA-2hhq-c99x-492r is a medium-severity (CVSS 5.5) Out-of-bounds Write vulnerability in Magick.NET-Q16-AnyCPU. A fix is available for Magick.NET-Q16-AnyCPU — see the affected versions and patch details below.

Also known asCVE-2026-48724
Published
Updated
Affected
17 pkgs
Patched
17 / 17
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-2hhq-c99x-492r.

EPSS Exploitation Probability

via FIRST.org ↗
0.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs1th percentile — riskier than 1% of all scored CVEsHighest risk
0.00%0.22%0.43%0.65%0.1%0.1%Jul 26Oct 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

17 pkgs affected
.NETMagick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-OpenMP-arm64.NETMagick.NET-Q16-HDRI-arm64.NETMagick.NET-Q16-HDRI-x64.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-OpenMP-arm64.NETMagick.NET-Q16-OpenMP-x64+9 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-24, when using an image with mask the Floyd-Steinberg dithering method it will cause a negative heap buffer over-write. This issue has been patched in version 7.1.2-24.

Affected Packages

17 total 17 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q16-AnyCPUall versions14.14.0dotnet add package Magick.NET-Q16-AnyCPU --version 14.14.0
.NETNuGetMagick.NET-Q16-HDRI-AnyCPUall versions14.14.0dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.14.0
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-arm64all versions14.14.0dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.14.0
.NETNuGetMagick.NET-Q16-HDRI-arm64all versions14.14.0dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.14.0
.NETNuGetMagick.NET-Q16-HDRI-x64all versions14.14.0dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.14.0
.NETNuGetMagick.NET-Q16-HDRI-x86all versions14.14.0dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.14.0

Affected Products

1 product · 1 configurations
Application
imagemagickimagemagick
< 7.1.2-24
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Magick.NET-Q16-AnyCPU, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update Magick.NET-Q16-AnyCPU to 14.14.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2hhq-c99x-492r is resolved across your whole dependency graph.

  3. Workarounds

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

When using an image with mask the Floyd-Steinberg dithering method will cause a negative heap buffer over-write.
O3 Security · Impact-Aware SCA

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ImageMagick has a Heap Buffer Underwrite in the…