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Critical ImageMagick Vulnerability Allows Remote Code Execution

## Cybersecurity: ImageMagick Vulnerability Update

JBy John MasonSep 01, 20252 min read

Cybersecurity: ImageMagick Vulnerability Update

A critical security vulnerability has been identified in ImageMagick, an open-source image processing software. This vulnerability allows for potential remote execution of arbitrary code by attackers.

The vulnerability, designated as CVE-2025-57803 , has a severity score of 9.8 out of 10. It affects 32-bit builds of ImageMagick versions earlier than 7.1.2-2 and 6.9.13-28.

The issue originates from a 32-bit integer overflow within the BMP (Bitmap) encoder in the WriteBMPImage function. This flaw leads to a heap buffer overflow.

Item Details

CVE ID CVE-2025-57803

Vulnerability 32-bit integer overflow in BMP encoder (WriteBMPImage) leading to heap buffer overflow

Affected Versions ImageMagick < 7.1.2-2 (7.x branch)

ImageMagick < 6.9.13-28 (6.x branch)

A critical security vulnerability has been identified in ImageMagick, an open-source image processing software.
John Mason · Thehackingpost

Patched Versions 7.1.2-2

6.9.13-28

Severity (CVSS v3.1) 9.8 (Critical)

In processing BMP format conversions, a mathematical overflow occurs during scanline-stride computation. This leads to a significant mismatch between expected and actual data output, resulting in a heap buffer overflow.

Dirk Lemstra, ImageMagick maintainer, has published a security advisory addressing this critical issue. The vulnerability can be exploited in auto-convert pipelines used by web applications and services, particularly when processing specially crafted images with widths exceeding 178,956,969 pixels on 32-bit systems.

This vulnerability may be exploited through network-accessible conversion services without authentication, affecting many web applications and cloud services that auto-process uploaded images. Vulnerable systems include 32-bit ImageMagick installations, whereas 64-bit systems are inherently safer against this overflow.

Remote code execution through heap manipulation Denial of service attacks causing application crashes Memory corruption compromising system integrity

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Immediate updates to patched versions are recommended:

Version 7.1.2-2 or later for the 7.x branch Version 6.9.13-28 or later for the 6.x branch

The patches include arithmetic guards around stride computation and enforce safety measures. This includes validating width and bits-per-pixel values before stride calculation.

Conduct regular security audits of image processing pipelines Implement defense-in-depth measures beyond library updates Monitor for unusual image processing requests indicating exploitation attempts

Organizations using ImageMagick should prioritize these updates and review their image processing workflows to ensure proper input validation and resource limits.

Administrators are advised to verify the architecture and update procedures of their ImageMagick installations, particularly for legacy environments or containerized applications.

Based on reporting by GBHackers.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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