CVE-2025-55160Public exploit

Sanitizer-only abort via mismatched clone callback

Published Aug 13, 2025 · Updated Aug 13, 2025

Undefined behavior in ImageMagick before 6.9.13-27 and 7.1.2-1 allows attackers to abort sanitizer builds during image coalescing. CloneSplayTree calls ConstantString through an incompatible void-pointer callback type while cloning image profiles. The two-byte input reaches the path through MagickWand coalescing; UBSan builds abort deterministically, while non-sanitized builds do not crash.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Undefined behavior in ImageMagick before 6.9.13-27 and 7.1.2-1 allows attackers to abort sanitizer builds during image coalescing. CloneSplayTree calls ConstantString through an incompatible void-pointer callback type while cloning image profiles. The two-byte input reaches the path through MagickWand coalescing; UBSan builds abort deterministically, while non-sanitized builds do not crash.

The record

CVE
CVE-2025-55160
Published
Aug 13, 2025
Updated
Aug 13, 2025
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-758, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 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=< 6.9.13-27
  2. Affected versionversion=< 7.1.2-1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=< 6.9.13-27; version=< 7.1.2-1

Published CVSS scores

6.1GitHub CNACVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
5.8SUSECVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H
5.3NVDCVSS: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.

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No observations available

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

Weakness, pattern, technique

CWE-758Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
T1499Endpoint Denial of Service

Public exploit references

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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