CVE-2026-33902

Process crash via unbounded FX expression recursion

Published Apr 13, 2026 · Updated Apr 13, 2026

Uncontrolled recursion in ImageMagick 6 before 6.9.13-44 and 7 before 7.1.2-19 allows local users to crash the process via a nested FX expression. TranslateExpression in MagickCore/fx.c increments recursion depth without first enforcing a maximum, allowing deeply nested FX syntax to exhaust the process stack. Triggering requires a user or local workflow to process the attacker-supplied expression, and the bounded consequence is termination of that ImageMagick process.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in ImageMagick 6 before 6.9.13-44 and 7 before 7.1.2-19 allows local users to crash the process via a nested FX expression. TranslateExpression in MagickCore/fx.c increments recursion depth without first enforcing a maximum, allowing deeply nested FX syntax to exhaust the process stack. Triggering requires a user or local workflow to process the attacker-supplied expression, and the bounded consequence is termination of that ImageMagick process.

The record

CVE
CVE-2026-33902
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-674, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 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=< 6.9.13-44
  2. Affected versionversion=< 7.1.2-19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

5.5GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

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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-674Uncontrolled Recursion
T1499Endpoint Denial of Service

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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