CVE-2026-23952

Description

A flaw was found in ImageMagick. A remote attacker could exploit a NULL pointer dereference vulnerability in the Magick Scripting Language (MSL) parser. This occurs when processing tags before images are loaded. Successful exploitation can lead to a Denial of Service (DoS) attack, making the software unavailable.

Statement

This vulnerability is rated Moderate for Red Hat products. A NULL pointer dereference flaw exists in ImageMagick's MSL parser when processing tags before image loading. This could allow an attacker to cause a Denial of Service (DoS) by providing a specially crafted image file. This affects ImageMagick versions 14.10.1 and below, as shipped in various Red Hat products including EPEL and Red Hat Enterprise Linux Extended Life Cycle Support (ELS) releases.

Mitigation

To mitigate this issue, users should avoid processing untrusted or specially crafted MSL (Magick Scripting Language) files with ImageMagick. Restricting the sources of MSL files and ensuring that ImageMagick only processes trusted input can reduce the risk of exploitation. If ImageMagick is used in an automated pipeline, consider implementing sandboxing mechanisms to limit the impact of potential denial-of-service attacks.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score6.57.5N/A
Attack VectorNetworkNetworkN/A
Attack ComplexityLowLowN/A
Privileges RequiredLowNoneN/A
User InteractionNoneNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityNoneNoneN/A
Integrity ImpactNoneNoneN/A
Availability ImpactHighHighN/A

Vector

Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Understanding the Weakness (CWE)

CWE-476

Availability

Technical Impact: DoS: Crash, Exit, or Restart

NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.

Integrity,Confidentiality

Technical Impact: Execute Unauthorized Code or Commands; Read Memory; Modify Memory

In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.

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