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ImageMagick has a heap buffer over-read via 32-bit integer overflow in MAT decoder

Moderate severity GitHub Reviewed Published Mar 9, 2026 in ImageMagick/ImageMagick • Updated Mar 10, 2026

Package

nuget Magick.NET-Q16-AnyCPU (NuGet)

Affected versions

< 14.10.4

Patched versions

14.10.4
nuget Magick.NET-Q16-HDRI-AnyCPU (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-x86 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-OpenMP-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-OpenMP-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-OpenMP-x86 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-x86 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-AnyCPU (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-OpenMP-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-OpenMP-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-x86 (NuGet)
< 14.10.4
14.10.4

Description

In MAT decoder uses 32-bit arithmetic due to incorrect parenthesization resulting in a heap over-read.

=================================================================
==969652==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x506000003b40 at pc 0x555557b2a926 bp 0x7fffffff4c80 sp 0x7fffffff4c70
READ of size 8 at 0x506000003b40 thread T0

References

@dlemstra dlemstra published to ImageMagick/ImageMagick Mar 9, 2026
Published by the National Vulnerability Database Mar 10, 2026
Published to the GitHub Advisory Database Mar 10, 2026
Reviewed Mar 10, 2026
Last updated Mar 10, 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
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

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:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

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.
(12th percentile)

Weaknesses

Out-of-bounds Read

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

CVE ID

CVE-2026-28692

GHSA ID

GHSA-mrmj-x24c-wwcv

Source code

Credits

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