CVE-2026-46523

Service crash via crafted MSL image

Published Jun 10, 2026 · Updated Jun 10, 2026

Heap use-after-free in the MSL decoder in ImageMagick before 7.1.2-23 and 6.9.13-48 allows local users to crash the process. Processing a crafted MSL image dereferences heap memory after it has been freed; upstream has not disclosed the object or lifetime error involved. No privileges or user interaction are required once local users can submit an MSL image, and the published impact is limited to availability.

CVSS severity6.2
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap use-after-free in the MSL decoder in ImageMagick before 7.1.2-23 and 6.9.13-48 allows local users to crash the process. Processing a crafted MSL image dereferences heap memory after it has been freed; upstream has not disclosed the object or lifetime error involved. No privileges or user interaction are required once local users can submit an MSL image, and the published impact is limited to availability.

The record

CVE
CVE-2026-46523
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-825, CWE-416, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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=< 6.9.13-48
  2. Affected versionversion=< 7.1.2-23

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=< 6.9.13-48; version=< 7.1.2-23

Published CVSS scores

6.2GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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-825Expired Pointer Dereference
CWE-416Use After Free
T1499.004Application or System Exploitation

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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