CVE-2026-48994: Magick.NET Q16 HDRI x86 ImageMagick Has A Heap Buffer Vulnerability

MODERATE
Advisory Identifier: GHSA-4v89-6mgq-6rgc
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CVSS 5.9
CWE-122
Published
Advisory Summary

CVE-2026-48994 is a MODERATE (CVSS 5.9) imagemagick has a heap buffer vulnerability (CWE-122: Heap-based Buffer Overflow) affecting Magick.NET Q16 HDRI x86 libraries in the NuGet ecosystem. The issue involves imagemagick has a heap buffer over-write in mat decoder on 32-bit systems. Remediation is available by upgrading affected packages to version 14.14.0.

CVE-2026-48994 at a Glance

CVE Identifier CVE-2026-48994
GHSA Identifier GHSA-4v89-6mgq-6rgc
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-122: Heap-based Buffer Overflow
Affected Product Magick.NET Q16 HDRI x86
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 5.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-48994

To remediate this vulnerability, upgrade all affected Magick.NET Q16 HDRI x86 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Magick.NET-Q16-HDRI-x86 fixed: 14.14.0 
Upgrade Magick.NET-Q16-HDRI-x86 to 14.14.0
Magick.NET-Q16-AnyCPU fixed: 14.14.0 
Upgrade Magick.NET-Q16-AnyCPU to 14.14.0
Magick.NET-Q16-HDRI-AnyCPU fixed: 14.14.0 
Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.14.0
Magick.NET-Q16-HDRI-OpenMP-arm64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.14.0
Magick.NET-Q16-HDRI-arm64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-HDRI-arm64 to 14.14.0
Magick.NET-Q16-HDRI-x64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-HDRI-x64 to 14.14.0
Magick.NET-Q16-OpenMP-arm64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-OpenMP-arm64 to 14.14.0
Magick.NET-Q16-OpenMP-x64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-OpenMP-x64 to 14.14.0
Magick.NET-Q16-arm64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-arm64 to 14.14.0
Magick.NET-Q16-x64 fixed: 14.14.0 
Upgrade Magick.NET-Q16-x64 to 14.14.0
Magick.NET-Q16-x86 fixed: 14.14.0 
Upgrade Magick.NET-Q16-x86 to 14.14.0
Magick.NET-Q8-AnyCPU fixed: 14.14.0 
Upgrade Magick.NET-Q8-AnyCPU to 14.14.0
Magick.NET-Q8-OpenMP-arm64 fixed: 14.14.0 
Upgrade Magick.NET-Q8-OpenMP-arm64 to 14.14.0
Magick.NET-Q8-OpenMP-x64 fixed: 14.14.0 
Upgrade Magick.NET-Q8-OpenMP-x64 to 14.14.0
Magick.NET-Q8-arm64 fixed: 14.14.0 
Upgrade Magick.NET-Q8-arm64 to 14.14.0
Magick.NET-Q8-x64 fixed: 14.14.0 
Upgrade Magick.NET-Q8-x64 to 14.14.0
Magick.NET-Q8-x86 fixed: 14.14.0 
Upgrade Magick.NET-Q8-x86 to 14.14.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Magick.NET-Q16-HDRI-x86

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-48994, inspect your project dependencies for Magick.NET Q16 HDRI x86:

inspect dependencies for Magick.NET-Q16-HDRI-x86

Analyze the terminal output to locate any version of Magick.NET Q16 HDRI x86 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 14.14.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-122: Heap-based Buffer Overflow, where 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(). In Magick.NET Q16 HDRI x86, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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

CVE-2026-48994 Affected Magick.NET Q16 HDRI x86 Versions

17 component(s)
Fixed Versions:
14.14.0
Product / Package Ecosystem Affected Versions Fixed Version
Magick.NET-Q16-HDRI-x86
nuget/Magick.NET-Q16-HDRI-x86
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-AnyCPU
nuget/Magick.NET-Q16-AnyCPU
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-HDRI-AnyCPU
nuget/Magick.NET-Q16-HDRI-AnyCPU
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-HDRI-OpenMP-arm64
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-HDRI-arm64
nuget/Magick.NET-Q16-HDRI-arm64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-HDRI-x64
nuget/Magick.NET-Q16-HDRI-x64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-OpenMP-arm64
nuget/Magick.NET-Q16-OpenMP-arm64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-OpenMP-x64
nuget/Magick.NET-Q16-OpenMP-x64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-arm64
nuget/Magick.NET-Q16-arm64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-x64
nuget/Magick.NET-Q16-x64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q16-x86
nuget/Magick.NET-Q16-x86
NuGet
< 14.14.0
14.14.0
Magick.NET-Q8-AnyCPU
nuget/Magick.NET-Q8-AnyCPU
NuGet
< 14.14.0
14.14.0
Magick.NET-Q8-OpenMP-arm64
nuget/Magick.NET-Q8-OpenMP-arm64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q8-OpenMP-x64
nuget/Magick.NET-Q8-OpenMP-x64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q8-arm64
nuget/Magick.NET-Q8-arm64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q8-x64
nuget/Magick.NET-Q8-x64
NuGet
< 14.14.0
14.14.0
Magick.NET-Q8-x86
nuget/Magick.NET-Q8-x86
NuGet
< 14.14.0
14.14.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-4v89-6mgq-6rgc
NVD — CVE-2026-48994 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48994
Magick.NET Q16 HDRI x86 Source Repository REPOSITORY
https://github.com/ImageMagick/ImageMagick
Magick.NET Q16 HDRI x86 Release RELEASE
https://github.com/dlemstra/Magick.NET/releases/tag/14.14.0

Frequently Asked Questions

What is CVE-2026-48994?
CVE-2026-48994 is a security vulnerability in Magick.NET Q16 HDRI x86 involving ImageMagick has a Heap Buffer Over-Write in MAT decoder on 32-bit systems under CWE-122: Heap-based Buffer Overflow.
Which Magick.NET Q16 HDRI x86 versions are affected?
Affected versions include releases prior to 14.14.0 across affected packages: Magick.NET-Q16-HDRI-x86, Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU, Magick.NET-Q16-HDRI-OpenMP-arm64, Magick.NET-Q16-HDRI-arm64, Magick.NET-Q16-HDRI-x64, Magick.NET-Q16-OpenMP-arm64, Magick.NET-Q16-OpenMP-x64, Magick.NET-Q16-arm64, Magick.NET-Q16-x64, Magick.NET-Q16-x86, Magick.NET-Q8-AnyCPU, Magick.NET-Q8-OpenMP-arm64, Magick.NET-Q8-OpenMP-x64, Magick.NET-Q8-arm64, Magick.NET-Q8-x64, Magick.NET-Q8-x86.
What version fixes CVE-2026-48994?
Upgrading to 14.14.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Magick.NET-Q16-HDRI-x86 affected?
Yes, Magick.NET-Q16-HDRI-x86 is affected in releases prior to 14.14.0. Upgrade your dependency to 14.14.0 or later.
Is Magick.NET-Q16-AnyCPU affected?
Yes, Magick.NET-Q16-AnyCPU is affected in releases prior to 14.14.0. Upgrade your dependency to 14.14.0 or later.
What is the CVSS score of CVE-2026-48994?
CVE-2026-48994 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-48994?
CVE-2026-48994 is classified under CWE-122: 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().).
How can I check NuGet dependencies for CVE-2026-48994?
Run the dependency tree command: 'inspect dependencies for Magick.NET-Q16-HDRI-x86'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4v89-6mgq-6rgc",
  "modified" : "2026-06-25T21:50:39Z",
  "published" : "2026-06-25T21:50:39Z",
  "aliases" : [ "CVE-2026-48994" ],
  "summary" : "ImageMagick has a Heap Buffer Over-Write in MAT decoder on 32-bit systems",
  "details" : "A missing check of a return value could lead to a heap buffer over-write in the MAT decoder on 32-bit systems.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
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    "package" : {
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  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-4v89-6mgq-6rgc"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-48994"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ImageMagick/ImageMagick"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dlemstra/Magick.NET/releases/tag/14.14.0"
  } ],
  "database_specific" : {
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    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-25T21:50:39Z",
    "nvd_published_at" : "2026-06-10T23:16:49Z"
  }
}