CVE-2026-46523

Modified Modified - Updated After Analysis

Heap Use After Free in ImageMagick

Publication date: 2026-06-10

Last updated on: 2026-06-30

Assigner: GitHub, Inc.

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2.23 and 6.9.13-48, a crafted MSL image can trigger a heap-use-after-free. Versions 7.1.2.23 and 6.9.13-48 fix the issue.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-10

Last Modified

2026-06-30

Generated

2026-07-01

AI Q&A

2026-06-11

EPSS Evaluated

2026-06-30

NVD

CVE-2026-46523

Affected Vendors & Products

Vendor	Product	Version / Range
imagemagick	imagemagick	to 6.9.13-48 (exc)
imagemagick	imagemagick	From 7.0.0-0 (inc) to 7.1.2-23 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-825	The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability exists in ImageMagick, a free and open-source software used for editing and manipulating digital images. Specifically, a crafted MSL image can trigger a heap-use-after-free condition in versions prior to 7.1.2.23 and 6.9.13-48. This means that the software may attempt to use memory after it has been freed, which can lead to undefined behavior or crashes.

Impact Analysis

The impact of this vulnerability is primarily on the availability of the system using ImageMagick. According to the CVSS score, it has a base score of 6.2 with an impact on availability (A:H), meaning it can cause a denial of service by crashing or destabilizing the application. There is no direct impact on confidentiality or integrity.

Mitigation Strategies

To mitigate this vulnerability, you should update ImageMagick to version 7.1.2.23 or later, or 6.9.13-48 or later, as these versions contain the fix for the heap-use-after-free issue triggered by crafted MSL images.

Compliance Impact

This vulnerability primarily impacts system availability due to a heap-use-after-free condition that can lead to denial of service or arbitrary code execution.

There is no direct impact on confidentiality or integrity of data, which are key concerns in compliance with standards like GDPR and HIPAA.

Therefore, while the vulnerability could affect system availability requirements, it does not directly compromise personal data confidentiality or integrity as defined by these regulations.

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