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Not in CISA KEV
HIGH severity

ImageMagick: Heap Buffer Over-Write in IPL decoder when reading multiple images of different dimensionsGHSA-36wm-hprc-mcf5

HIGH

GHSA-36wm-hprc-mcf5 is a high-severity (CVSS 7.5) CWE-122 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-2026-46520
Published
Updated
Affected
18 pkgs
Patched
18 / 18
Exploits
None indexed
Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • 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-36wm-hprc-mcf5.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs39th percentile — riskier than 39% of all scored CVEsHighest risk
0.00%0.38%0.75%1.13%0.4%0.4%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

18 pkgs affected
.NETMagick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-OpenMP-arm64.NETMagick.NET-Q16-HDRI-OpenMP-x64.NETMagick.NET-Q16-HDRI-arm64.NETMagick.NET-Q16-HDRI-x64.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-OpenMP-arm64+10 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 versions 6.9.13-48 and 7.1.2-23, when reading multiple images with different dimensions an out of bounds heap write can occur. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.

Affected Packages

18 total 18 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q16-AnyCPUall versions14.13.1dotnet add package Magick.NET-Q16-AnyCPU --version 14.13.1
.NETNuGetMagick.NET-Q16-HDRI-AnyCPUall versions14.13.1dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.13.1
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-arm64all versions14.13.1dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.13.1
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-x64all versions14.13.1dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.13.1
.NETNuGetMagick.NET-Q16-HDRI-arm64all versions14.13.1dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.13.1
.NETNuGetMagick.NET-Q16-HDRI-x64all versions14.13.1dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.13.1

Affected Products

1 product · 2 configurations
Application
imagemagickimagemagick
≥ 7.0.0-0 && < 7.1.2-23
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 14.13.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-36wm-hprc-mcf5 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant
Workaround published by Red Hat
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Source: Red Hat security advisory for GHSA-36wm-hprc-mcf5 (CC BY 4.0)
ProductFixed inAdvisory
Red Hat Enterprise Linux 7 Extended Lifecycle SupportImageMagick-0:6.9.10.68-17.el7_9RHSA-2026:32961

Frequently Asked Questions

When reading multiple images with different dimensions an out of bounds heap write can occur.
O3 Security · Impact-Aware SCA

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ImageMagick: Heap Buffer Over-Write in IPL decoder…