Heap-data disclosure via oversized raw-image extraction
Published Feb 24, 2026 · Updated Feb 24, 2026
Heap buffer over-read in ImageMagick before 7.1.2-15 and 6.9.13-40 allows local users to disclose heap data through raw-image processing. The BGR, CMYK, GRAY, RAW, RGB, and YCbCr readers iterate to the extracted image width rather than the smaller backing-canvas width when -extract exceeds -size, reading beyond allocated pixels. Exploitation requires local control of the command arguments and raw input; the published impact is heap-data disclosure without integrity or availability loss.
Summary
What happened
Heap buffer over-read in ImageMagick before 7.1.2-15 and 6.9.13-40 allows local users to disclose heap data through raw-image processing. The BGR, CMYK, GRAY, RAW, RGB, and YCbCr readers iterate to the extracted image width rather than the smaller backing-canvas width when -extract exceeds -size, reading beyond allocated pixels. Exploitation requires local control of the command arguments and raw input; the published impact is heap-data disclosure without integrity or availability loss.
The record
- CVE
- CVE-2026-25576
- Published
- Feb 24, 2026
- Updated
- Feb 24, 2026
- Vendor
- ImageMagick Studio LLC
- Product
- ImageMagick
- Classifications
- CWE-122
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 24, 2026CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=< 6.9.13-40
- Affected versionversion=>= 7.0.0, < 7.1.2-15
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.
Weakness, pattern, technique
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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