5.9
Medium
Magick.NET-Q16-AnyCPU

CVE-2026-33900

CVE-2026-33900 is a medium-severity integer overflow or wraparound vulnerability in Magick.NET-Q16-AnyCPU (nuget), affecting versions < 14.12.0. It is fixed in 14.12.0.

Key facts
◎
CVSS score
5.9
Medium
↗
Attack vector
Network
☷
Issuing authority
GitHub Advisory Database
□
Affected package
Magick.NET-Q16-AnyCPU
✓
Fixed in
14.12.0
☼
Disclosed
2026

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, the viff encoder contains an integer truncation/wraparound issue on 32-bit builds that could trigger an out of bounds heap write, potentially causing a crash. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

Impact

What is integer overflow or wraparound?

An arithmetic operation produces a value that exceeds the integer type's maximum, causing it to wrap to an unexpected small value. Typical impact: incorrect size calculations leading to heap overflows or logic errors.

Severity and exposure

CVE-2026-33900 has a CVSS score of 5.9 (Medium). The vector is network-reachable, no privileges required, and no user interaction. 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 (14.12.0). Upgrading removes the vulnerable code path.

Affected versions

nuget

  • Magick.NET-Q16-AnyCPU (< 14.12.0)
  • Magick.NET-Q16-HDRI-AnyCPU (< 14.12.0)
  • Magick.NET-Q16-HDRI-x86 (< 14.12.0)
  • Magick.NET-Q16-x86 (< 14.12.0)
  • Magick.NET-Q8-AnyCPU (< 14.12.0)
  • Magick.NET-Q8-x86 (< 14.12.0)

Security releases

  • Magick.NET-Q16-AnyCPU → 14.12.0 (nuget)
  • Magick.NET-Q16-HDRI-AnyCPU → 14.12.0 (nuget)
  • Magick.NET-Q16-HDRI-x86 → 14.12.0 (nuget)
  • Magick.NET-Q16-x86 → 14.12.0 (nuget)
  • Magick.NET-Q8-AnyCPU → 14.12.0 (nuget)
  • Magick.NET-Q8-x86 → 14.12.0 (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-2026-33900 is reachable in your applications. Explore open-source security for your team.

See if CVE-2026-33900 is reachable in your applications. Get a demo

Remediation advice

Upgrade the following packages to resolve this vulnerability:

  • Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 or later
  • Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.12.0 or later
  • Upgrade Magick.NET-Q16-HDRI-x86 to 14.12.0 or later
  • Upgrade Magick.NET-Q16-x86 to 14.12.0 or later
  • Upgrade Magick.NET-Q8-AnyCPU to 14.12.0 or later
  • Upgrade Magick.NET-Q8-x86 to 14.12.0 or later

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

Frequently asked questions about CVE-2026-33900

What is CVE-2026-33900?

CVE-2026-33900 is a medium-severity integer overflow or wraparound vulnerability in Magick.NET-Q16-AnyCPU (nuget), affecting versions < 14.12.0. It is fixed in 14.12.0. An arithmetic operation produces a value that exceeds the integer type's maximum, causing it to wrap to an unexpected small value.

How severe is CVE-2026-33900?

CVE-2026-33900 has a CVSS score of 5.9 (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-2026-33900?
  • Magick.NET-Q16-AnyCPU (nuget) (versions < 14.12.0)
  • Magick.NET-Q16-HDRI-AnyCPU (nuget) (versions < 14.12.0)
  • Magick.NET-Q16-HDRI-x86 (nuget) (versions < 14.12.0)
  • Magick.NET-Q16-x86 (nuget) (versions < 14.12.0)
  • Magick.NET-Q8-AnyCPU (nuget) (versions < 14.12.0)
  • Magick.NET-Q8-x86 (nuget) (versions < 14.12.0)
Is there a fix for CVE-2026-33900?

Yes. CVE-2026-33900 is fixed in 14.12.0. Upgrade to this version or later.

Is CVE-2026-33900 exploitable, and should I be worried?

Whether CVE-2026-33900 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-2026-33900 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-2026-33900?
  • Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 or later
  • Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.12.0 or later
  • Upgrade Magick.NET-Q16-HDRI-x86 to 14.12.0 or later
  • Upgrade Magick.NET-Q16-x86 to 14.12.0 or later
  • Upgrade Magick.NET-Q8-AnyCPU to 14.12.0 or later
  • Upgrade Magick.NET-Q8-x86 to 14.12.0 or later

Other vulnerabilities in Magick.NET-Q16-AnyCPU

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