CVE-2026-56373

LOW

mageMagick has a possible use-after-free write in its PDB decoder

Published February 25, 2026Updated July 11, 2026Source: osv

Summary

A use-after-free vulnerability exists in the PDB decoder that will use a stale pointer when a memory allocation fails and that could result in a crash or a single zero byte write. ``` ==4033155==ERROR: AddressSanitizer: UNKNOWN SIGNAL on unknown address 0x000000000000 (pc 0x5589c1971b24 bp 0x7ffdcc7ae2d0 sp 0x7ffdcc7adb20 T0) ``` ``` ==4034812==ERROR: AddressSanitizer: heap-use-after-free on address 0x7f099e9f7800 at pc 0x5605d909ab20 bp 0x7ffe52045b50 sp 0x7ffe52045b40 WRITE of size 1 at 0x7f099e9f7800 thread T0 ```

Remediation

Upgrade to the fixed version using your package manager.

NuGet

Update Magick.NET-Q8-x86 to 14.10.3 or later

dotnet add package Magick.NET-Q8-x86 --version 14.10.3

NuGet

Update Magick.NET-Q16-HDRI-x64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.10.3

NuGet

Update Magick.NET-Q16-HDRI-arm64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.10.3

NuGet

Update Magick.NET-Q16-HDRI-AnyCPU to 14.10.3 or later

dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.3

NuGet

Update Magick.NET-Q16-OpenMP-x86 to 14.10.3 or later

dotnet add package Magick.NET-Q16-OpenMP-x86 --version 14.10.3

NuGet

Update Magick.NET-Q16-x86 to 14.10.3 or later

dotnet add package Magick.NET-Q16-x86 --version 14.10.3

NuGet

Update Magick.NET-Q8-OpenMP-arm64 to 14.10.3 or later

dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.10.3

NuGet

Update Magick.NET-Q16-AnyCPU to 14.10.3 or later

dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.3

NuGet

Update Magick.NET-Q8-AnyCPU to 14.10.3 or later

dotnet add package Magick.NET-Q8-AnyCPU --version 14.10.3

NuGet

Update Magick.NET-Q16-HDRI-x86 to 14.10.3 or later

dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.10.3

NuGet

Update Magick.NET-Q16-OpenMP-arm64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.10.3

NuGet

Update Magick.NET-Q16-x64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-x64 --version 14.10.3

NuGet

Update Magick.NET-Q16-OpenMP-x64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.10.3

NuGet

Update Magick.NET-Q16-arm64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-arm64 --version 14.10.3

NuGet

Update Magick.NET-Q16-HDRI-OpenMP-x64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.10.3

NuGet

Update Magick.NET-Q8-OpenMP-x64 to 14.10.3 or later

dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.10.3

NuGet

Update Magick.NET-Q8-arm64 to 14.10.3 or later

dotnet add package Magick.NET-Q8-arm64 --version 14.10.3

NuGet

Update Magick.NET-Q8-x64 to 14.10.3 or later

dotnet add package Magick.NET-Q8-x64 --version 14.10.3

NuGet

Update Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.10.3 or later

dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.10.3

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

Affected Packages (19)

Package	Ecosystem	Affected	Fixed In
Magick.NET-Q8-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+221 more)	14.10.3
Magick.NET-Q16-HDRI-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+202 more)	14.10.3
Magick.NET-Q16-HDRI-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+50 more)	14.10.3
Magick.NET-Q16-HDRI-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+202 more)	14.10.3
Magick.NET-Q16-OpenMP-x86	nuget	All versions	14.10.3
Magick.NET-Q16-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+221 more)	14.10.3
Magick.NET-Q8-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+50 more)	14.10.3
Magick.NET-Q16-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+205 more)	14.10.3
Magick.NET-Q8-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+205 more)	14.10.3
Magick.NET-Q16-HDRI-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+202 more)	14.10.3
Magick.NET-Q16-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+50 more)	14.10.3
Magick.NET-Q16-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+221 more)	14.10.3
Magick.NET-Q16-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+102 more)	14.10.3
Magick.NET-Q16-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+50 more)	14.10.3
Magick.NET-Q16-HDRI-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+102 more)	14.10.3
Magick.NET-Q8-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+102 more)	14.10.3
Magick.NET-Q8-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+50 more)	14.10.3
Magick.NET-Q8-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+221 more)	14.10.3
Magick.NET-Q16-HDRI-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+50 more)	14.10.3

Vulnerability Classification

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

CWE-416
Use After FreeMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 3.7 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

Low

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

References

Frequently Asked Questions

What is CVE-2026-56373?: mageMagick has a possible use-after-free write in its PDB decoder This vulnerability has been assigned a severity rating of LOW (CVSS score: 3.7/10).
How do I check if my project is affected by CVE-2026-56373?: CVE-2026-56373 affects Magick.NET-Q8-x86, Magick.NET-Q16-HDRI-x64 and Magick.NET-Q16-HDRI-arm64 (and 16 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-56373 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

3.7

Exploitation is difficult or impact is minor. Address in your next planned update.

Also Known As

GHSA-3j4x-rwrx-xxj9

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