Executive Summary

CVE-2026-25968 is a high-severity stack-based buffer overflow vulnerability in ImageMagick, an open-source software for editing and manipulating digital images.

The vulnerability occurs in the processing of an attribute within the msl.c file, where a long attribute value can overflow a fixed-size stack buffer.

This overflow causes memory corruption through an out-of-bounds write on the stack, which can lead to serious security issues.

It affects versions of ImageMagick prior to 7.1.2-15 and 6.9.13-40, which contain patches to fix this issue.

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Impact Analysis

This vulnerability can be exploited remotely over a network without requiring privileges or user interaction.

The impact includes high confidentiality risk, meaning unauthorized access to data is possible.

Additionally, it can cause high availability impact, potentially leading to denial of service by crashing the application.

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Compliance Impact

I don't know

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Detection Guidance

This vulnerability is a stack-based buffer overflow in ImageMagick occurring during processing of an attribute in the msl.c file. Detection can involve monitoring for crashes or memory corruption errors related to ImageMagick processes.

One approach is to run ImageMagick with AddressSanitizer enabled to detect stack-buffer-overflow errors during image processing, as the vulnerability triggers out-of-bounds writes on the stack.

Specific commands to detect the vulnerability are not provided in the available resources.

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Mitigation Strategies

The immediate mitigation step is to upgrade ImageMagick to version 7.1.2-15 or later, or 6.9.13-40 or later, where the vulnerability has been patched.

Avoid processing untrusted or malicious image files with vulnerable versions of ImageMagick to reduce risk until the update is applied.

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