---
id: GHSA-qvxh-prvr-85w2
title: >-
  ImageMagick: Use-After-Free in FormatMagickCaption when memory allocation
  fails
summary: >-
  ImageMagick: Use-After-Free in FormatMagickCaption when memory allocation
  fails
severity: low
cvss: 3.7
cwe:
  - CWE-416
vendor: Magick
product: Magick.NET-Q16-AnyCPU
ecosystem: nuget
affected:
  - Magick.NET-Q16-AnyCPU < 14.15.0
  - Magick.NET-Q16-HDRI-AnyCPU < 14.15.0
  - Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.15.0
  - Magick.NET-Q16-HDRI-x64 < 14.15.0
  - Magick.NET-Q16-HDRI-x86 < 14.15.0
  - Magick.NET-Q16-OpenMP-arm64 < 14.15.0
  - Magick.NET-Q16-OpenMP-x64 < 14.15.0
  - Magick.NET-Q16-arm64 < 14.15.0
  - Magick.NET-Q16-x64 < 14.15.0
  - Magick.NET-Q16-x86 < 14.15.0
  - Magick.NET-Q8-AnyCPU < 14.15.0
  - Magick.NET-Q8-OpenMP-arm64 < 14.15.0
  - Magick.NET-Q8-OpenMP-x64 < 14.15.0
  - Magick.NET-Q8-arm64 < 14.15.0
  - Magick.NET-Q8-x64 < 14.15.0
  - Magick.NET-Q8-x86 < 14.15.0
  - Magick.NET-Q16-HDRI-arm64 < 14.15.0
patched:
  - Magick.NET-Q16-AnyCPU 14.15.0
  - Magick.NET-Q16-HDRI-AnyCPU 14.15.0
  - Magick.NET-Q16-HDRI-OpenMP-arm64 14.15.0
  - Magick.NET-Q16-HDRI-x64 14.15.0
  - Magick.NET-Q16-HDRI-x86 14.15.0
  - Magick.NET-Q16-OpenMP-arm64 14.15.0
  - Magick.NET-Q16-OpenMP-x64 14.15.0
  - Magick.NET-Q16-arm64 14.15.0
  - Magick.NET-Q16-x64 14.15.0
  - Magick.NET-Q16-x86 14.15.0
  - Magick.NET-Q8-AnyCPU 14.15.0
  - Magick.NET-Q8-OpenMP-arm64 14.15.0
  - Magick.NET-Q8-OpenMP-x64 14.15.0
  - Magick.NET-Q8-arm64 14.15.0
  - Magick.NET-Q8-x64 14.15.0
  - Magick.NET-Q8-x86 14.15.0
  - Magick.NET-Q16-HDRI-arm64 14.15.0
published: '2026-07-24'
updated: '2026-07-24'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-qvxh-prvr-85w2'
references:
  - url: >-
      https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qvxh-prvr-85w2
  - url: 'https://github.com/dlemstra/Magick.NET/releases/tag/14.15.0'
  - url: 'https://github.com/advisories/GHSA-qvxh-prvr-85w2'
tags:
  - ghsa
  - nuget
ingestedAt: '2026-07-24T15:30:59.111Z'
---

## Overview

When a memory allocation fails inside the FormatMagickCaption method a dangling pointer still points to the freed memory.

## Affected packages

- `Magick.NET-Q16-AnyCPU < 14.15.0`
- `Magick.NET-Q16-HDRI-AnyCPU < 14.15.0`
- `Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.15.0`
- `Magick.NET-Q16-HDRI-x64 < 14.15.0`
- `Magick.NET-Q16-HDRI-x86 < 14.15.0`
- `Magick.NET-Q16-OpenMP-arm64 < 14.15.0`
- `Magick.NET-Q16-OpenMP-x64 < 14.15.0`
- `Magick.NET-Q16-arm64 < 14.15.0`
- `Magick.NET-Q16-x64 < 14.15.0`
- `Magick.NET-Q16-x86 < 14.15.0`
- `Magick.NET-Q8-AnyCPU < 14.15.0`
- `Magick.NET-Q8-OpenMP-arm64 < 14.15.0`
- `Magick.NET-Q8-OpenMP-x64 < 14.15.0`
- `Magick.NET-Q8-arm64 < 14.15.0`
- `Magick.NET-Q8-x64 < 14.15.0`
- `Magick.NET-Q8-x86 < 14.15.0`
- `Magick.NET-Q16-HDRI-arm64 < 14.15.0`

## Remediation

Upgrade to a patched release:

- `Magick.NET-Q16-AnyCPU 14.15.0`
- `Magick.NET-Q16-HDRI-AnyCPU 14.15.0`
- `Magick.NET-Q16-HDRI-OpenMP-arm64 14.15.0`
- `Magick.NET-Q16-HDRI-x64 14.15.0`
- `Magick.NET-Q16-HDRI-x86 14.15.0`
- `Magick.NET-Q16-OpenMP-arm64 14.15.0`
- `Magick.NET-Q16-OpenMP-x64 14.15.0`
- `Magick.NET-Q16-arm64 14.15.0`
- `Magick.NET-Q16-x64 14.15.0`
- `Magick.NET-Q16-x86 14.15.0`
- `Magick.NET-Q8-AnyCPU 14.15.0`
- `Magick.NET-Q8-OpenMP-arm64 14.15.0`
- `Magick.NET-Q8-OpenMP-x64 14.15.0`
- `Magick.NET-Q8-arm64 14.15.0`
- `Magick.NET-Q8-x64 14.15.0`
- `Magick.NET-Q8-x86 14.15.0`
- `Magick.NET-Q16-HDRI-arm64 14.15.0`