CVE-2026-56371Network attack vector

Memory exhaustion via unreleased TXT texture objects

Published Jun 23, 2026 · Updated Jun 23, 2026

Memory leak in ImageMagick before 7.1.2-15 and 6.9.13-40 allows remote attackers to consume memory via crafted TXT files. In ReadTEXTImage in coders/txt.c, a failed GetTypeMetrics call exits without passing the texture returned by ReadImage to DestroyImageList. Processing requires a TXT file with a texture attribute on a build without FreeType; repeated failures degrade availability without exposing or modifying data.

CVSS severity6.9
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in ImageMagick before 7.1.2-15 and 6.9.13-40 allows remote attackers to consume memory via crafted TXT files. In ReadTEXTImage in coders/txt.c, a failed GetTypeMetrics call exits without passing the texture returned by ReadImage to DestroyImageList. Processing requires a TXT file with a texture attribute on a build without FreeType; repeated failures degrade availability without exposing or modifying data.

The record

CVE
CVE-2026-56371
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-401, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 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 <6.9.13-40
  2. Affected versionversion=0 <7.1.2-15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=0 <6.9.13-40; version=0 <7.1.2-15

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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