CVE-2026-25985: ImageMagick Memory Allocation With Excessive Without Vulnerability

HIGH
Advisory Identifier: GHSA-v7g2-m8c5-mf84
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CVSS 7.5
CWE-789 CWE-770
Published
Advisory Summary

CVE-2026-25985 is a HIGH (CVSS 7.5) memory allocation with excessive without vulnerability (CWE-789: Memory Allocation with Excessive Size Value) affecting ImageMagick libraries in the NuGet ecosystem. The issue involves memory allocation with excessive without limits in the internal svg decoder. Remediation is available by upgrading affected packages to version 14.10.3.

CVE-2026-25985 at a Glance

CVE Identifier CVE-2026-25985
GHSA Identifier GHSA-v7g2-m8c5-mf84
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-789: Memory Allocation with Excessive Size Value
Affected Product ImageMagick
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
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-2026-25985

To remediate this vulnerability, upgrade all affected ImageMagick 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-AnyCPU fixed: 14.10.3 
Upgrade Magick.NET-Q16-AnyCPU to 14.10.3
Magick.NET-Q16-HDRI-AnyCPU fixed: 14.10.3 
Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.10.3
Magick.NET-Q16-HDRI-OpenMP-arm64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.10.3
Magick.NET-Q16-HDRI-OpenMP-x64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-HDRI-OpenMP-x64 to 14.10.3
Magick.NET-Q16-HDRI-arm64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-HDRI-arm64 to 14.10.3
Magick.NET-Q16-HDRI-x64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-HDRI-x64 to 14.10.3
Magick.NET-Q16-HDRI-x86 fixed: 14.10.3 
Upgrade Magick.NET-Q16-HDRI-x86 to 14.10.3
Magick.NET-Q16-OpenMP-arm64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-OpenMP-arm64 to 14.10.3
Magick.NET-Q16-OpenMP-x64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-OpenMP-x64 to 14.10.3
Magick.NET-Q16-OpenMP-x86 fixed: 14.10.3 
Upgrade Magick.NET-Q16-OpenMP-x86 to 14.10.3
Magick.NET-Q16-arm64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-arm64 to 14.10.3
Magick.NET-Q16-x64 fixed: 14.10.3 
Upgrade Magick.NET-Q16-x64 to 14.10.3
Magick.NET-Q16-x86 fixed: 14.10.3 
Upgrade Magick.NET-Q16-x86 to 14.10.3
Magick.NET-Q8-AnyCPU fixed: 14.10.3 
Upgrade Magick.NET-Q8-AnyCPU to 14.10.3
Magick.NET-Q8-OpenMP-arm64 fixed: 14.10.3 
Upgrade Magick.NET-Q8-OpenMP-arm64 to 14.10.3
Magick.NET-Q8-OpenMP-x64 fixed: 14.10.3 
Upgrade Magick.NET-Q8-OpenMP-x64 to 14.10.3
Magick.NET-Q8-arm64 fixed: 14.10.3 
Upgrade Magick.NET-Q8-arm64 to 14.10.3
Magick.NET-Q8-x64 fixed: 14.10.3 
Upgrade Magick.NET-Q8-x64 to 14.10.3
Magick.NET-Q8-x86 fixed: 14.10.3 
Upgrade Magick.NET-Q8-x86 to 14.10.3
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-AnyCPU

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-25985, inspect your project dependencies for ImageMagick:

inspect dependencies for Magick.NET-Q16-AnyCPU

Analyze the terminal output to locate any version of ImageMagick in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 14.10.3), 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-789: Memory Allocation with Excessive Size Value, where the product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. In ImageMagick, 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 crafted SVG file containing an malicious element causes ImageMagick to attempt to allocate ~674 GB of memory, leading to an out-of-memory abort. Found via AFL++ fuzzing with afl-clang-lto instrumentation and AddressSanitizer.

CVE-2026-25985 Affected ImageMagick Versions

19 component(s)
Fixed Versions:
14.10.3
Product / Package Ecosystem Affected Versions Fixed Version
Magick.NET-Q16-AnyCPU
nuget/Magick.NET-Q16-AnyCPU
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-HDRI-AnyCPU
nuget/Magick.NET-Q16-HDRI-AnyCPU
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-HDRI-OpenMP-arm64
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-HDRI-OpenMP-x64
nuget/Magick.NET-Q16-HDRI-OpenMP-x64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-HDRI-arm64
nuget/Magick.NET-Q16-HDRI-arm64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-HDRI-x64
nuget/Magick.NET-Q16-HDRI-x64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-HDRI-x86
nuget/Magick.NET-Q16-HDRI-x86
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-OpenMP-arm64
nuget/Magick.NET-Q16-OpenMP-arm64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-OpenMP-x64
nuget/Magick.NET-Q16-OpenMP-x64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-OpenMP-x86
nuget/Magick.NET-Q16-OpenMP-x86
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-arm64
nuget/Magick.NET-Q16-arm64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-x64
nuget/Magick.NET-Q16-x64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q16-x86
nuget/Magick.NET-Q16-x86
NuGet
< 14.10.3
14.10.3
Magick.NET-Q8-AnyCPU
nuget/Magick.NET-Q8-AnyCPU
NuGet
< 14.10.3
14.10.3
Magick.NET-Q8-OpenMP-arm64
nuget/Magick.NET-Q8-OpenMP-arm64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q8-OpenMP-x64
nuget/Magick.NET-Q8-OpenMP-x64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q8-arm64
nuget/Magick.NET-Q8-arm64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q8-x64
nuget/Magick.NET-Q8-x64
NuGet
< 14.10.3
14.10.3
Magick.NET-Q8-x86
nuget/Magick.NET-Q8-x86
NuGet
< 14.10.3
14.10.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v7g2-m8c5-mf84
NVD — CVE-2026-25985 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25985
Security Fix Commit FIX COMMIT
https://github.com/ImageMagick/ImageMagick/commit/1a51eb9af00c36724660e294520878fd1f13e312
ImageMagick Source Repository REPOSITORY
https://github.com/ImageMagick/ImageMagick
ImageMagick Release RELEASE
https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3

Frequently Asked Questions

What is CVE-2026-25985?
CVE-2026-25985 is a security vulnerability in ImageMagick involving Memory allocation with excessive without limits in the internal SVG decoder under CWE-789: Memory Allocation with Excessive Size Value.
Which ImageMagick versions are affected?
Affected versions include releases prior to 14.10.3 across affected packages: Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU, Magick.NET-Q16-HDRI-OpenMP-arm64, Magick.NET-Q16-HDRI-OpenMP-x64, Magick.NET-Q16-HDRI-arm64, Magick.NET-Q16-HDRI-x64, Magick.NET-Q16-HDRI-x86, Magick.NET-Q16-OpenMP-arm64, Magick.NET-Q16-OpenMP-x64, Magick.NET-Q16-OpenMP-x86, 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-2026-25985?
Upgrading to 14.10.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Magick.NET-Q16-AnyCPU affected?
Yes, Magick.NET-Q16-AnyCPU is affected in releases prior to 14.10.3. Upgrade your dependency to 14.10.3 or later.
Is Magick.NET-Q16-HDRI-AnyCPU affected?
Yes, Magick.NET-Q16-HDRI-AnyCPU is affected in releases prior to 14.10.3. Upgrade your dependency to 14.10.3 or later.
What is the CVSS score of CVE-2026-25985?
CVE-2026-25985 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-25985?
CVE-2026-25985 is classified under CWE-789: Memory Allocation with Excessive Size Value (The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.).
How can I check NuGet dependencies for CVE-2026-25985?
Run the dependency tree command: 'inspect dependencies for Magick.NET-Q16-AnyCPU'. 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-v7g2-m8c5-mf84",
  "modified" : "2026-02-24T15:44:19Z",
  "published" : "2026-02-24T15:44:19Z",
  "aliases" : [ "CVE-2026-25985" ],
  "summary" : "ImageMagick: Memory allocation with excessive without limits in the internal SVG decoder",
  "details" : "A crafted SVG file containing an malicious element causes ImageMagick to attempt to allocate ~674 GB of memory, leading to an out-of-memory abort.\n\nFound via AFL++ fuzzing with afl-clang-lto instrumentation and AddressSanitizer.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
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    },
    "ranges" : [ {
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      "name" : "Magick.NET-Q16-HDRI-OpenMP-arm64"
    },
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  }, {
    "package" : {
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    },
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  }, {
    "package" : {
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      "name" : "Magick.NET-Q16-HDRI-x86"
    },
    "ranges" : [ {
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      "events" : [ {
        "introduced" : "0"
      }, {
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    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-OpenMP-arm64"
    },
    "ranges" : [ {
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      "events" : [ {
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    "package" : {
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    },
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      "events" : [ {
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  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-OpenMP-x86"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.10.3"
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    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-arm64"
    },
    "ranges" : [ {
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  }, {
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    },
    "ranges" : [ {
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  }, {
    "package" : {
      "ecosystem" : "NuGet",
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    },
    "ranges" : [ {
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      }, {
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    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-AnyCPU"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
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    "package" : {
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    },
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      "name" : "Magick.NET-Q8-OpenMP-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
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      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.10.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.10.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-x86"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.10.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v7g2-m8c5-mf84"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25985"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/commit/1a51eb9af00c36724660e294520878fd1f13e312"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ImageMagick/ImageMagick"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770", "CWE-789" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-24T15:44:19Z",
    "nvd_published_at" : "2026-02-24T02:16:02Z"
  }
}