CVE-2026-25970

MEDIUM

ImageMagick Has Signed Integer Overflow in SIXEL Decoder, Leading to Memory Corruption

Published March 12, 2026Updated March 14, 2026Source: osv

Summary

A signed integer overflow vulnerability in ImageMagick's SIXEL decoder allows an attacker to trigger memory corruption and denial of service when processing a maliciously crafted SIXEL image file. The vulnerability occurs during buffer reallocation operations where pointer arithmetic using signed 32-bit integers overflows. ``` AddressSanitizer:DEADLYSIGNAL ================================================================= ==143838==ERROR: AddressSanitizer: UNKNOWN SIGNAL on unknown address 0x000000000000 #0 0x7f379d5adb53 (/lib/x86_64-linux-gnu/libc.so.6+0xc4b53) ```

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-190
Integer OverflowMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 5.3 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

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

References

Frequently Asked Questions

What is CVE-2026-25970?: ImageMagick Has Signed Integer Overflow in SIXEL Decoder, Leading to Memory Corruption This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 5.3/10).
How do I check if my project is affected by CVE-2026-25970?: CVE-2026-25970 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-2026-25970 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

5.3

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

Also Known As

GHSA-xg29-8ghv-v4xr

Related CVEs

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CVE-2026-27799
MEDIUM
ImageMagick has a heap Buffer Over-read in its DJVU image format handler
CVE-2026-25984
LOW
ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds

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