CVE-2025-46393

Process interruption via incorrect MIFF packet sizing

Published Apr 23, 2025 · Updated Apr 23, 2025

Incorrect buffer-size calculation in ImageMagick before 7.1.1-44 allows local users to interrupt image processing via a crafted MIFF file. In coders/miff.c, ReadMIFFImage and WriteMIFFImage add meta-channel sizes to assumed standard channels instead of deriving packet_size from the actual channel count. Exploitation requires local processing of a multispectral MIFF with meta channels in an arbitrary order; the record does not specify whether the process hangs or crashes.

CVSS severity2.9
Low
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect buffer-size calculation in ImageMagick before 7.1.1-44 allows local users to interrupt image processing via a crafted MIFF file. In coders/miff.c, ReadMIFFImage and WriteMIFFImage add meta-channel sizes to assumed standard channels instead of deriving packet_size from the actual channel count. Exploitation requires local processing of a multispectral MIFF with meta channels in an arbitrary order; the record does not specify whether the process hangs or crashes.

The record

CVE
CVE-2025-46393
Published
Apr 23, 2025
Updated
Apr 23, 2025
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-131
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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 <7.1.1-44

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=0 <7.1.1-44

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
2.9MITRECVSS:3.1/AV:L/AC:H/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.

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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-131Incorrect Calculation of Buffer Size

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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