5.5
Medium
Magick.NET-Q16-AnyCPU

CVE-2026-46521

CVE-2026-46521 is a medium-severity out-of-bounds write vulnerability in Magick.NET-Q16-AnyCPU (nuget), affecting versions < 14.13.1. It is fixed in 14.13.1.

Key facts
◎
CVSS score
5.5
Medium
↗
Attack vector
Local
☷
Issuing authority
GitHub Advisory Database
□
Affected package
Magick.NET-Q16-AnyCPU
✓
Fixed in
14.13.1
☼
Disclosed
2026

Summary

When using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check.

Impact

What is out-of-bounds write?

A write operation targets a memory location beyond the intended buffer boundary. Typical impact: memory corruption, crash, or arbitrary code execution.

Severity and exposure

CVE-2026-46521 has a CVSS score of 5.5 (Medium). The vector is requires local access, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.

A fixed version is available (14.13.1). Upgrading removes the vulnerable code path.

Affected versions

nuget

  • Magick.NET-Q16-AnyCPU (< 14.13.1)
  • Magick.NET-Q16-HDRI-AnyCPU (< 14.13.1)
  • Magick.NET-Q16-HDRI-OpenMP-arm64 (< 14.13.1)
  • Magick.NET-Q16-HDRI-OpenMP-x64 (< 14.13.1)
  • Magick.NET-Q16-HDRI-arm64 (< 14.13.1)
  • Magick.NET-Q16-HDRI-x64 (< 14.13.1)
  • Magick.NET-Q16-HDRI-x86 (< 14.13.1)
  • Magick.NET-Q16-OpenMP-arm64 (< 14.13.1)
  • Magick.NET-Q16-OpenMP-x64 (< 14.13.1)
  • Magick.NET-Q16-arm64 (< 14.13.1)
  • Magick.NET-Q16-x64 (< 14.13.1)
  • Magick.NET-Q16-x86 (< 14.13.1)
  • Magick.NET-Q8-AnyCPU (< 14.13.1)
  • Magick.NET-Q8-OpenMP-arm64 (< 14.13.1)
  • Magick.NET-Q8-OpenMP-x64 (< 14.13.1)
  • Magick.NET-Q8-arm64 (< 14.13.1)
  • Magick.NET-Q8-x64 (< 14.13.1)
  • Magick.NET-Q8-x86 (< 14.13.1)

Security releases

  • Magick.NET-Q16-AnyCPU → 14.13.1 (nuget)
  • Magick.NET-Q16-HDRI-AnyCPU → 14.13.1 (nuget)
  • Magick.NET-Q16-HDRI-OpenMP-arm64 → 14.13.1 (nuget)
  • Magick.NET-Q16-HDRI-OpenMP-x64 → 14.13.1 (nuget)
  • Magick.NET-Q16-HDRI-arm64 → 14.13.1 (nuget)
  • Magick.NET-Q16-HDRI-x64 → 14.13.1 (nuget)
  • Magick.NET-Q16-HDRI-x86 → 14.13.1 (nuget)
  • Magick.NET-Q16-OpenMP-arm64 → 14.13.1 (nuget)
  • Magick.NET-Q16-OpenMP-x64 → 14.13.1 (nuget)
  • Magick.NET-Q16-arm64 → 14.13.1 (nuget)
  • Magick.NET-Q16-x64 → 14.13.1 (nuget)
  • Magick.NET-Q16-x86 → 14.13.1 (nuget)
  • Magick.NET-Q8-AnyCPU → 14.13.1 (nuget)
  • Magick.NET-Q8-OpenMP-arm64 → 14.13.1 (nuget)
  • Magick.NET-Q8-OpenMP-x64 → 14.13.1 (nuget)
  • Magick.NET-Q8-arm64 → 14.13.1 (nuget)
  • Magick.NET-Q8-x64 → 14.13.1 (nuget)
  • Magick.NET-Q8-x86 → 14.13.1 (nuget)
Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.

Kodem's runtime-powered SCA identifies whether CVE-2026-46521 is reachable in your applications. Explore open-source security for your team.

See if CVE-2026-46521 is reachable in your applications. Get a demo

Remediation advice

Upgrade the following packages to resolve this vulnerability:

  • Upgrade Magick.NET-Q16-AnyCPU to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-OpenMP-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-x86 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-OpenMP-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-OpenMP-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-x86 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-AnyCPU to 14.13.1 or later
  • Upgrade Magick.NET-Q8-OpenMP-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-OpenMP-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-x86 to 14.13.1 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently asked questions about CVE-2026-46521

What is CVE-2026-46521?

CVE-2026-46521 is a medium-severity out-of-bounds write vulnerability in Magick.NET-Q16-AnyCPU (nuget), affecting versions < 14.13.1. It is fixed in 14.13.1. A write operation targets a memory location beyond the intended buffer boundary.

How severe is CVE-2026-46521?

CVE-2026-46521 has a CVSS score of 5.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which packages are affected by CVE-2026-46521?
  • Magick.NET-Q16-AnyCPU (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-HDRI-AnyCPU (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-HDRI-OpenMP-arm64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-HDRI-OpenMP-x64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-HDRI-arm64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-HDRI-x64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-HDRI-x86 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-OpenMP-arm64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-OpenMP-x64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-arm64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-x64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q16-x86 (nuget) (versions < 14.13.1)
  • Magick.NET-Q8-AnyCPU (nuget) (versions < 14.13.1)
  • Magick.NET-Q8-OpenMP-arm64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q8-OpenMP-x64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q8-arm64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q8-x64 (nuget) (versions < 14.13.1)
  • Magick.NET-Q8-x86 (nuget) (versions < 14.13.1)
Is there a fix for CVE-2026-46521?

Yes. CVE-2026-46521 is fixed in 14.13.1. Upgrade to this version or later.

Is CVE-2026-46521 exploitable, and should I be worried?

Whether CVE-2026-46521 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo

What actually determines whether CVE-2026-46521 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

How do I fix CVE-2026-46521?
  • Upgrade Magick.NET-Q16-AnyCPU to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-OpenMP-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-HDRI-x86 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-OpenMP-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-OpenMP-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q16-x86 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-AnyCPU to 14.13.1 or later
  • Upgrade Magick.NET-Q8-OpenMP-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-OpenMP-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-arm64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-x64 to 14.13.1 or later
  • Upgrade Magick.NET-Q8-x86 to 14.13.1 or later

Other vulnerabilities in Magick.NET-Q16-AnyCPU

Stop the waste.
Protect your environment with Kodem.

Get a personalized demo
Get a personalized demo