Process crash via unbounded logmap writes
Published Aug 13, 2025 · Updated Aug 13, 2025
Heap-based buffer overflow in ImageMagick before 7.1.2-1 allows local users to crash image processing via a crafted MIFF file. TransformsRGBImage sizes logmap for MaxMap+1 entries but derives write-loop bounds from unbounded reference-black and reference-white metadata, so values above 1024 write past the heap allocation. Exploitation requires the file to be processed with MIFF enabled; the websafe security policy blocks the demonstrated path, and the documented impact is a process crash.
Summary
What happened
Heap-based buffer overflow in ImageMagick before 7.1.2-1 allows local users to crash image processing via a crafted MIFF file. TransformsRGBImage sizes logmap for MaxMap+1 entries but derives write-loop bounds from unbounded reference-black and reference-white metadata, so values above 1024 write past the heap allocation. Exploitation requires the file to be processed with MIFF enabled; the websafe security policy blocks the demonstrated path, and the documented impact is a process crash.
The record
- CVE
- CVE-2025-55005
- Published
- Aug 13, 2025
- Updated
- Aug 13, 2025
- Vendor
- ImageMagick Studio LLC
- Product
- ImageMagick
- Classifications
- CWE-122, CAPEC-92
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2025CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=< 7.1.2-1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Public exploit references
- Minimal crafted MIFF proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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