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ImageMagick: Heap Buffer Over-Read in distributed pixel cache server

Moderate severity GitHub Reviewed Published May 19, 2026 in ImageMagick/ImageMagick • Updated May 22, 2026

Package

nuget Magick.NET-Q16-AnyCPU (NuGet)

Affected versions

< 14.12.0

Patched versions

14.12.0
nuget Magick.NET-Q16-HDRI-AnyCPU (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-x86 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-OpenMP-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-OpenMP-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-x86 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-AnyCPU (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-OpenMP-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-OpenMP-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-x86 (NuGet)
< 14.12.0
14.12.0

Description

An attacker who can connect to a magick -distribute-cache service can cause a heap buffer over-read in the server process.

References

@dlemstra dlemstra published to ImageMagick/ImageMagick May 19, 2026
Published to the GitHub Advisory Database May 22, 2026
Reviewed May 22, 2026
Last updated May 22, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
High
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H

EPSS score

Weaknesses

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer. Learn more on MITRE.

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Learn more on MITRE.

CVE ID

CVE-2026-47166

GHSA ID

GHSA-6gxq-f64p-5w6f

Source code

Credits

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