CVE-2026-48994

MEDIUM

ImageMagick has a Heap Buffer Over-Write in MAT decoder on 32-bit systems

Published June 25, 2026Updated June 25, 2026Source: osv

Summary

A missing check of a return value could lead to a heap buffer over-write in the MAT decoder on 32-bit systems.

Remediation

Upgrade to the fixed version using your package manager.

NuGet

Update Magick.NET-Q16-x64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-x64 --version 14.14.0

NuGet

Update Magick.NET-Q16-HDRI-arm64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.14.0

NuGet

Update Magick.NET-Q8-x64 to 14.14.0 or later

dotnet add package Magick.NET-Q8-x64 --version 14.14.0

NuGet

Update Magick.NET-Q8-OpenMP-arm64 to 14.14.0 or later

dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.14.0

NuGet

Update Magick.NET-Q16-HDRI-x86 to 14.14.0 or later

dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.14.0

NuGet

Update Magick.NET-Q8-OpenMP-x64 to 14.14.0 or later

dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.14.0

NuGet

Update Magick.NET-Q16-HDRI-x64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.14.0

NuGet

Update Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.14.0

NuGet

Update Magick.NET-Q8-x86 to 14.14.0 or later

dotnet add package Magick.NET-Q8-x86 --version 14.14.0

NuGet

Update Magick.NET-Q16-x86 to 14.14.0 or later

dotnet add package Magick.NET-Q16-x86 --version 14.14.0

NuGet

Update Magick.NET-Q8-AnyCPU to 14.14.0 or later

dotnet add package Magick.NET-Q8-AnyCPU --version 14.14.0

NuGet

Update Magick.NET-Q16-arm64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-arm64 --version 14.14.0

NuGet

Update Magick.NET-Q8-arm64 to 14.14.0 or later

dotnet add package Magick.NET-Q8-arm64 --version 14.14.0

NuGet

Update Magick.NET-Q16-OpenMP-x64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.14.0

NuGet

Update Magick.NET-Q16-AnyCPU to 14.14.0 or later

dotnet add package Magick.NET-Q16-AnyCPU --version 14.14.0

NuGet

Update Magick.NET-Q16-HDRI-AnyCPU to 14.14.0 or later

dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.14.0

NuGet

Update Magick.NET-Q16-OpenMP-arm64 to 14.14.0 or later

dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.14.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (17)

Package	Ecosystem	Affected	Fixed In
Magick.NET-Q16-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+228 more)	14.14.0
Magick.NET-Q16-HDRI-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+57 more)	14.14.0
Magick.NET-Q8-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+228 more)	14.14.0
Magick.NET-Q8-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+57 more)	14.14.0
Magick.NET-Q16-HDRI-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+209 more)	14.14.0
Magick.NET-Q8-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+109 more)	14.14.0
Magick.NET-Q16-HDRI-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+209 more)	14.14.0
Magick.NET-Q16-HDRI-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+57 more)	14.14.0
Magick.NET-Q8-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+228 more)	14.14.0
Magick.NET-Q16-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+228 more)	14.14.0
Magick.NET-Q8-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+212 more)	14.14.0
Magick.NET-Q16-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+57 more)	14.14.0
Magick.NET-Q8-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+57 more)	14.14.0
Magick.NET-Q16-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+109 more)	14.14.0
Magick.NET-Q16-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+212 more)	14.14.0
Magick.NET-Q16-HDRI-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+209 more)	14.14.0
Magick.NET-Q16-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+57 more)	14.14.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-122
View on MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 5.9 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2026-48994?: ImageMagick has a Heap Buffer Over-Write in MAT decoder on 32-bit systems This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 5.9/10).
How do I check if my project is affected by CVE-2026-48994?: CVE-2026-48994 affects Magick.NET-Q16-x64, Magick.NET-Q16-HDRI-arm64 and Magick.NET-Q8-x64 (and 14 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-48994 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

5.9

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-4v89-6mgq-6rgc

Related CVEs

CVE-2026-25989
HIGH
ImageMagick: Integer overflow or wraparound and incorrect conversion between numeric types in the internal SVG decoder
CVE-2026-28687
MEDIUM
ImageMagick has Heap Use-After-Free in ImageMagick MSL decoder
CVE-2026-28692
MEDIUM
ImageMagick has a heap buffer over-read via 32-bit integer overflow in MAT decoder
CVE-2026-33535
MEDIUM
ImageMagick has an Out-of-Bounds write of a zero byte in its X11 display interaction
CVE-2026-27799
MEDIUM
ImageMagick has a heap Buffer Over-read in its DJVU image format handler
CVE-2026-46557
MEDIUM
ImageMagick: Stack overflow in fx operation
CVE-2026-25984
LOW
ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds
CVE-2025-55212
LOW
ImageMagick affected by divide-by-zero in ThumbnailImage via montage -geometry ":" leads to crash

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies