CVE-2026-26283

Process hang via nonterminating JPEG extent search

Published Feb 24, 2026 · Updated Feb 24, 2026

Infinite looping in the ImageMagick JPEG encoder before 7.1.2-15 and 6.9.13-40 allows local users to hang the process. When persistent JPEG writes fail during jpeg:extent encoding, a continue statement prevents the binary-search loop from terminating and leaves the process consuming 100% CPU. A crafted image must reach the local JPEG encoding path, and the availability impact is confined to the invoked ImageMagick process.

CVSS severity6.2
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite looping in the ImageMagick JPEG encoder before 7.1.2-15 and 6.9.13-40 allows local users to hang the process. When persistent JPEG writes fail during jpeg:extent encoding, a continue statement prevents the binary-search loop from terminating and leaves the process consuming 100% CPU. A crafted image must reach the local JPEG encoding path, and the availability impact is confined to the invoked ImageMagick process.

The record

CVE
CVE-2026-26283
Published
Feb 24, 2026
Updated
Feb 24, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-835, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 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=< 6.9.13-40
  2. Affected versionversion=>= 7.0.0, < 7.1.2-15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=< 6.9.13-40; version=>= 7.0.0, < 7.1.2-15

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
7.5NIST NVDCVSS:3.1/AV:N/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-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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