How severe is CVE-2026-33535?

CVE-2026-33535 has a CVSS score of 4/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2026-33535?

CVE-2026-33535 affects the following packages: Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-HDRI-AnyCPU (NuGet), Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet), Magick.NET-Q16-HDRI-arm64 (NuGet), Magick.NET-Q16-HDRI-x64 (NuGet), Magick.NET-Q16-HDRI-x86 (NuGet), Magick.NET-Q16-OpenMP-arm64 (NuGet), Magick.NET-Q16-OpenMP-x64 (NuGet), and 10 more. Ecosystems affected: NuGet.

How do I fix CVE-2026-33535?

Update Magick.NET-Q16-AnyCPU to 14.11.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-33535 is resolved across your whole dependency graph.

How do I detect CVE-2026-33535 in my NuGet dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Magick.NET-Q16-AnyCPU, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-33535 if there is no patch (or I can't update yet)?

Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Is CVE-2026-33535 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-33535 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-33535?

CVE-2026-33535 has an EPSS (Exploit Prediction Scoring System) score of 0.1%, placing it in the 4th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-33535?

CVE-2026-33535 is classified as Out-of-bounds Write (CWE-787). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-33535 published, and has it been updated?

CVE-2026-33535 was published on March 26, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

.NET

.NET NuGet

Not in CISA KEV

MEDIUM severity

CVE-2026-33535 — Magick.NET-Q16-AnyCPU

MEDIUM

CVE-2026-33535 is a medium-severity (CVSS 4) Out-of-bounds Write vulnerability in Magick.NET-Q16-AnyCPU. A fix is available for Magick.NET-Q16-AnyCPU — see the affected versions and patch details below.

ImageMagick has an Out-of-Bounds write of a zero byte in its X11 display interaction

Also known asGHSA-mw3m-pqr2-qv7c

Published

Mar 26, 2026

Updated

Oct 28, 2026

Affected

18 pkgs

Patched

18 / 18

Exploits

None indexed

Exploitation data as of Oct 28, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-33535.

EPSS Exploitation Probability

via FIRST.org ↗

0.1%probability of exploitation in next 30 days

Lower Risk+0.00%

Lower risk than most CVEs4th percentile — riskier than 4% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

18 pkgs affected

.NETMagick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-OpenMP-arm64.NETMagick.NET-Q16-HDRI-arm64.NETMagick.NET-Q16-HDRI-x64.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-OpenMP-arm64.NETMagick.NET-Q16-OpenMP-x64+10 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-18 and 6.9.13-43, an out-of-bounds write of a zero byte exists in the X11 display interaction path that could lead to a crash. Versions 7.1.2-18 and 6.9.13-43 patch the issue.

Affected Packages

18 total 18 fixed

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`Magick.NET-Q16-AnyCPU`	all versions	14.11.1`dotnet add package Magick.NET-Q16-AnyCPU --version 14.11.1`
.NETNuGet	`Magick.NET-Q16-HDRI-AnyCPU`	all versions	14.11.1`dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.11.1`
.NETNuGet	`Magick.NET-Q16-HDRI-OpenMP-arm64`	all versions	14.11.1`dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.11.1`
.NETNuGet	`Magick.NET-Q16-HDRI-arm64`	all versions	14.11.1`dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.11.1`
.NETNuGet	`Magick.NET-Q16-HDRI-x64`	all versions	14.11.1`dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.11.1`
.NETNuGet	`Magick.NET-Q16-HDRI-x86`	all versions	14.11.1`dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.11.1`

Affected Products

1 product · 2 configurations

Application

imagemagickimagemagick

≥ 7.0.0-0 && < 7.1.2-18

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Magick.NET-Q16-AnyCPU, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update Magick.NET-Q16-AnyCPU to 14.11.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-33535 is resolved across your whole dependency graph.
Workarounds
Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatLow

Low impact. This flaw in ImageMagick's X11 display interaction path requires local access to trigger an out-of-bounds write, leading to a denial of service. Red Hat Enterprise Linux systems are affected if ImageMagick is installed and used in an X11 environment.

Workaround published by Red Hat

For systems where ImageMagick is not required, especially in server environments without a graphical interface, consider removing the `ImageMagick` package to eliminate the attack surface. This action may impact applications that rely on ImageMagick for image processing.

Source: Red Hat security advisory for CVE-2026-33535 (CC BY 4.0)

UbuntuMEDIUM

USN-8810-1Ubuntu

Frequently Asked Questions

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-18 and 6.9.13-43, an out-of-bounds write of a zero byte exists in the X11 `display` interaction path that could lead to a crash. Versions 7.1.2-18 and 6.9.13-43 patch the issue.

O3 Security · Impact-Aware SCA

Is CVE-2026-33535 in your dependencies?

Find it across NuGet, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

4/10CVSS v3 base

Vector breakdown

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Raw vector

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

CWE Classification

CWE-787Out-of-bounds Write

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Mar 26, 2026

Last updated

Oct 28, 2026

Identifiers

CVE-2026-33535

GHSA-mw3m-pqr2-qv7c

References

Advisorygithub.com · CVE 2026 33535.json Advisorygithub.com · GHSA mw3m pqr2 qv7c Advisorynvd.nist.gov · CVE 2026 33535 Packagegithub.com · ImageMagick

Related vulnerabilities

This CVE is medium severity; 3 of 8 other CVEs affecting Magick.NET-Q16-AnyCPU are rated as high or higher (top: moderate).

GHSA-cvhv-g4rq-3hmwCVE-2026-53466CVE-2026-62363GHSA-56m6-8q75-f2rwGHSA-6jwg-7q3p-5fqmGHSA-6vxp-gfwf-hcr9GHSA-76q6-2p6h-xjqrGHSA-7c7m-fpjw-gwcq

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026

CVE-2026-33535 — Magick.NET-Q16-AnyCPU

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is CVE-2026-33535 in your dependencies?