Description
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to both 6.9.13-52 and 7.1.2-27, processing an extremely large JNX file on 32-bit platforms can cause an integer overflow, leading to a heap buffer over-write. This issue has been fixed in versions 6.9.13-52 and 7.1.2-27.
Published: 2026-07-30
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

ImageMagick is a free, open-source image processing tool. Versions prior to 6.9.13‑52 and 7.1.2‑27 suffer from an integer overflow when handling extremely large JNX files on 32‑bit platforms. The overflow corrupts heap memory, leading to a heap buffer over‑write. This weakness is classified as CWE‑190. The overflow causes memory corruption that might disrupt image processing or compromise the stability of the application; the advisory does not specify further exploit possibilities.

Affected Systems

Affected products include ImageMagick’s ImageMagick suite on 32‑bit builds. The vulnerability affects all releases older than 6.9.13‑52 and 7.1.2‑27; newer releases contain the fix.

Risk and Exploitability

The CVSS score of 5.1 indicates moderate severity, while the EPSS of < 1% shows a very low exploitation probability at the time of assessment. ImageMagick is not listed in the CISA KEV catalog, and the attack vector is inferred to be remote via a crafted JNX file processed by the vulnerable software, requiring no additional privileges.

Generated by OpenCVE AI on August 4, 2026 at 12:20 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade to ImageMagick 6.9.13‑52, 7.1.2‑27, or later releases that incorporate the fix
  • If an upgrade is not immediately possible, restrict processing of JNX files on 32‑bit systems or block such files from user input
  • Consider disabling JNX support when compiling ImageMagick or configuring the runtime to reject JNX files to prevent exploitation

Generated by OpenCVE AI on August 4, 2026 at 12:20 UTC.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-h22j-f9xw-xjjm ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds
History

Thu, 30 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 30 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 30 Jul 2026 01:45:00 +0000

Type Values Removed Values Added
First Time appeared Imagemagick
Imagemagick imagemagick
Vendors & Products Imagemagick
Imagemagick imagemagick

Thu, 30 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Description ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to both 6.9.13-52 and 7.1.2-27, processing an extremely large JNX file on 32-bit platforms can cause an integer overflow, leading to a heap buffer over-write. This issue has been fixed in versions 6.9.13-52 and 7.1.2-27.
Title ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Imagemagick Imagemagick
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-30T14:14:23.353Z

Reserved: 2026-07-14T22:32:17.731Z

Link: CVE-2026-62946

cve-icon Vulnrichment

Updated: 2026-07-30T14:14:13.375Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-30T00:16:25.353

Modified: 2026-08-03T16:19:22.763

Link: CVE-2026-62946

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-30T00:06:16Z

Links: CVE-2026-62946 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-04T12:30:09Z

Weaknesses
  • CWE-190

    Integer Overflow or Wraparound