CVE-2026-66011
Received Received - Intake

Memory Leak in ImageMagick CLI via Malformed Arguments

Publication date: 2026-07-25

Last updated on: 2026-07-25

Assigner: VulnCheck

Description
ImageMagick before 7.1.2-27 contains a memory leak vulnerability in the magick command-line interface when invalid options are provided. Attackers can trigger memory exhaustion by repeatedly supplying malformed command-line arguments to consume system resources.

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Meta Information

Published
2026-07-25
Last Modified
2026-07-25
Generated
2026-07-25
AI Q&A
2026-07-25
EPSS Evaluated
N/A
NVD
CVE-2026-66011
EUVD
EUVD-2026-49042

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
imagemagick imagemagick to 7.1.2-27 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Attack-Flow Graph

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Executive Summary

This vulnerability is a memory leak in ImageMagick versions before 7.1.2-27. It occurs when invalid command-line options are provided to the magick CLI tool. Attackers can exploit this by repeatedly sending malformed arguments, causing the system to exhaust memory resources over time.

Detection Guidance

Detecting this vulnerability involves checking for ImageMagick versions before 7.1.2-27 and monitoring for memory exhaustion during command-line operations. Use 'convert --version' or 'magick --version' to check the installed version. Monitor system memory usage during ImageMagick operations for unusual spikes.

Impact Analysis

The impact includes system slowdowns or crashes due to memory exhaustion. An attacker could degrade system performance or cause denial-of-service conditions by repeatedly triggering the memory leak. Local users or those with limited access may exploit this if they can run the magick command.

Mitigation Strategies

Upgrade ImageMagick to version 7.1.2-27 or later. Restrict user permissions to limit command-line access. Monitor and limit resource usage for ImageMagick processes. Disable unnecessary ImageMagick features if not required.

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