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ImageMagick has a Heap Buffer Over-Write in SF3 encoder when writing multi-frame image

Moderate severity GitHub Reviewed Published Jun 9, 2026 in ImageMagick/ImageMagick • Updated Jun 26, 2026

Package

nuget Magick.NET-Q16-AnyCPU (NuGet)

Affected versions

< 14.14.0

Patched versions

14.14.0
nuget Magick.NET-Q16-HDRI-AnyCPU (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-HDRI-arm64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-HDRI-x64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-HDRI-x86 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-OpenMP-arm64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-OpenMP-x64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-arm64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-x64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q16-x86 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q8-AnyCPU (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q8-OpenMP-arm64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q8-OpenMP-x64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q8-arm64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q8-x64 (NuGet)
< 14.14.0
14.14.0
nuget Magick.NET-Q8-x86 (NuGet)
< 14.14.0
14.14.0

Description

An crafted multi-frame can result in a heap buffer over-write when encoding it with the SF3 encoder.

References

@dlemstra dlemstra published to ImageMagick/ImageMagick Jun 9, 2026
Published by the National Vulnerability Database Jun 10, 2026
Published to the GitHub Advisory Database Jun 26, 2026
Reviewed Jun 26, 2026
Last updated Jun 26, 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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(2nd percentile)

Weaknesses

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Learn more on MITRE.

Out-of-bounds Write

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

CVE ID

CVE-2026-53465

GHSA ID

GHSA-44cp-c3ww-9rv5

Source code

Credits

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