CVE-2026-62946
Analyzed Analyzed - Analysis Complete

Integer Overflow in ImageMagick Leading to Heap Buffer Overflow

Vulnerability report for CVE-2026-62946, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-07-30

Last updated on: 2026-08-03

Assigner: GitHub, Inc.

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.

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Meta Information

Published
2026-07-30
Last Modified
2026-08-03
Generated
2026-08-19
AI Q&A
2026-07-30
EPSS Evaluated
2026-08-18
NVD
EUVD

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
imagemagick imagemagick to 6.9.13-52 (exc)
imagemagick imagemagick From 7.0.0-0 (inc) to 7.1.2-27 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

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Executive Summary

CVE-2026-62946 is a vulnerability in ImageMagick where processing extremely large JNX files on 32-bit platforms causes an integer overflow. This overflow leads to a heap buffer overwrite, potentially causing memory corruption.

Detection Guidance

To detect this vulnerability, check the ImageMagick version installed on your system. Run 'convert --version' or 'magick --version' to see if it is below 6.9.13-52 or 7.1.2-27. If so, the system is vulnerable. Monitor for crashes or memory corruption when processing JNX files.

Impact Analysis

This vulnerability can impact you by causing memory corruption on your system when processing large JNX files. It may lead to crashes or instability, primarily affecting the availability of your system.

Compliance Impact

This vulnerability primarily impacts system availability due to memory corruption from integer overflow, which may lead to crashes or instability. It does not directly expose or leak sensitive data, so its impact on GDPR or HIPAA compliance is likely minimal unless it disrupts critical processing of personal or health information.

Mitigation Strategies

Immediately update ImageMagick to version 6.9.13-52 or 7.1.2-27 or later. Avoid processing untrusted JNX files on 32-bit systems until patched. Restrict access to ImageMagick for unprivileged users if possible.

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