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CVE-2026-27798

ImageMagick: ImageMagick: Information disclosure via heap buffer over-read when processing images

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Severity

Moderate

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · February 26, 2026

Updated · August 18, 2026

Description

A flaw was found in ImageMagick. A local user could exploit a heap buffer over-read vulnerability by processing a specially crafted image with small dimensions using the -wavelet-denoise operator. This vulnerability may lead to the disclosure of sensitive information.

Statement

This MODERATE impact vulnerability in ImageMagick affects Red Hat Enterprise Linux. A heap buffer over-read can occur when processing images with small dimensions using the -wavelet-denoise operator. This flaw could lead to information disclosure or denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

To reduce exposure, avoid processing untrusted or maliciously crafted images with ImageMagick. If processing untrusted content is necessary, consider executing ImageMagick operations within a sandboxed environment to contain potential risks.

CVSS / CWE

CVSS 3.1 · 7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE-125 · Out-of-bounds Read