---
id: CVE-2026-109279
title: >-
  ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper
  synchronization when the security policy is accessed, so simultaneous reads
  and writes of the policy by multiple threads trigger a race condition that
  causes a heap buffer…
summary: >-
  ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper
  synchronization when the security policy is accessed, so simultaneous reads
  and writes of the policy by multiple threads trigger a race condition that
  causes a heap buffer…
severity: low
cvss: 2.5
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-362
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:20.577'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109279'
references:
  - url: >-
      https://github.com/ImageMagick/ImageMagick/commit/12db6f04e895deae4537ead10c771a244607794a
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-8x3v-wr32-qqh4
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ImageMagick/ImageMagick6/commit/9ddc71abea5cbe7d18164fa0f0077a105cab514f
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/imagemagick-before-6.9.13-57-and-7-x-before-7.1.2-32-heap-buffer-overflow-via-concurrent-security-policy-access
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.186Z'
---

## Overview

ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper synchronization when the security policy is accessed, so simultaneous reads and writes of the policy by multiple threads trigger a race condition that causes a heap buffer over-write. An attacker able to induce concurrent security policy access can crash the application, causing a denial of service.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.