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MEDIUM severity

GHSA-fpvf-frm6-625q — Magick.NET-Q16-AnyCPU

MEDIUM

GHSA-fpvf-frm6-625q is a medium-severity (CVSS 5.3) Use After Free vulnerability in Magick.NET-Q16-AnyCPU. A fix is available for Magick.NET-Q16-AnyCPU — see the affected versions and patch details below.

ImageMagick has Heap Use-After-Free in ImageMagick MSL decoder

Also known asCVE-2026-28687
Published
Mar 12, 2026
Updated
Mar 14, 2026
Affected
19 pkgs
Patched
19 / 19
Exploits
None indexed
Exploitation data as of Sep 24, 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-fpvf-frm6-625q.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-fpvf-frm6-625q plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

19 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+11 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

A heap use-after-free vulnerability in ImageMagick's MSL decoder allows an attacker to trigger access to freed memory by crafting an MSL file.

=================================================================
==1500633==ERROR: AddressSanitizer: heap-use-after-free on address 0x527000011550 at pc 0x5612583fa212 bp 0x7ffedb86d160 sp 0x7ffedb86d150
READ of size 8 at 0x527000011550 thread T0

Affected Packages

19 total 19 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q16-AnyCPUall versions14.10.4dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.4
.NETNuGetMagick.NET-Q16-HDRI-AnyCPUall versions14.10.4dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.4
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-arm64all versions14.10.4dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.10.4
.NETNuGetMagick.NET-Q16-HDRI-arm64all versions14.10.4dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.10.4
.NETNuGetMagick.NET-Q16-HDRI-x64all versions14.10.4dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.10.4
.NETNuGetMagick.NET-Q16-HDRI-x86all versions14.10.4dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.10.4

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 14.10.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fpvf-frm6-625q 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.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-fpvf-frm6-625q can be triaged on real exposure rather than presence alone.

Tailored to GHSA-fpvf-frm6-625q. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

A heap use-after-free vulnerability in ImageMagick's MSL decoder allows an attacker to trigger access to freed memory by crafting an MSL file. ``` ================================================================= ==1500633==ERROR: AddressSanitizer: heap-use-after-free on address 0x527000011550 at pc 0x5612583fa212 bp 0x7ffedb86d160 sp 0x7ffedb86d150 READ of size 8 at 0x527000011550 thread T0 ```
O3 Security · Impact-Aware SCA

Is GHSA-fpvf-frm6-625q in your dependencies?

O3 Security finds GHSA-fpvf-frm6-625q across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works
GHSA-fpvf-frm6-625q: Medium 5.3 severity | O3 Security