CVE-2026-56370

Description

An out-of-bounds access vulnerability exists in ImageMagick's ConnectedComponentsImage() function. By passing malformed connected-components definitions through the CLI, an attacker can cause a denial of service or potentially execute arbitrary code.

Statement

An out-of-bounds access flaw exists in ImageMagick when handling malformed connected-components artifacts. Exploitation requires local user interaction via the CLI and can result in a denial of service or arbitrary code execution.

Mitigation

Prevent the injection of malformed -connected-components flags by strictly sanitizing all user-supplied CLI input in backend applications. Additionally, if automated ImageMagick processing is not required, restrict execution permissions on the binaries to trusted administrative groups.

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 Score3.37.83.3
Attack VectorLocalLocalLocal
Attack ComplexityLowLowLow
Privileges RequiredNoneNoneNone
User InteractionRequiredRequiredRequired
ScopeUnchangedUnchangedUnchanged
ConfidentialityNoneHighNone
Integrity ImpactNoneHighNone
Availability ImpactLowHighLow

Vector

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

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

cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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