CVE-2026-56370

Image-processing crash via unchecked artifact indices

Published Jun 24, 2026 · Updated Jun 24, 2026

Out-of-bounds access in ImageMagick 6.x before 6.9.13-44 and 7.x before 7.1.2-19 allows local users to crash processing. ConnectedComponentsImage() uses indices parsed from connected-components:keep, keep-top, and remove-colors artifacts to access the object array without checking them against component_image->colors. Exploitation requires user interaction and control of CLI artifact values; the upstream assessment reports an access violation and availability impact only.

CVSS severity4.8
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in ImageMagick 6.x before 6.9.13-44 and 7.x before 7.1.2-19 allows local users to crash processing. ConnectedComponentsImage() uses indices parsed from connected-components:keep, keep-top, and remove-colors artifacts to access the object array without checking them against component_image->colors. Exploitation requires user interaction and control of CLI artifact values; the upstream assessment reports an access violation and availability impact only.

The record

CVE
CVE-2026-56370
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-787, CWE-125, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.9.13-44
  2. Affected versionversion=0 <7.1.2-19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=0 <6.9.13-44; version=0 <7.1.2-19

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.3VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
4.8VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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