Memory disclosure via PSB RLE integer overflow
Published Jun 21, 2026 · Updated Jun 21, 2026
Out-of-bounds read in ImageMagick before 7.1.2-15 and 6.9.x before 6.9.13-40 allows remote attackers to read memory via a crafted PSB file. On 32-bit builds, ReadPSDChannelRLE in coders/psd.c overflows an integer while calculating PSB RLE sizes and reads beyond a heap buffer. The vulnerable path is reached only when a 32-bit build decodes a crafted PSD v2 file; exposure can disclose process memory or crash the consuming application.
Summary
What happened
Out-of-bounds read in ImageMagick before 7.1.2-15 and 6.9.x before 6.9.13-40 allows remote attackers to read memory via a crafted PSB file. On 32-bit builds, ReadPSDChannelRLE in coders/psd.c overflows an integer while calculating PSB RLE sizes and reads beyond a heap buffer. The vulnerable path is reached only when a 32-bit build decodes a crafted PSD v2 file; exposure can disclose process memory or crash the consuming application.
The record
- CVE
- CVE-2026-56367
- Published
- Jun 21, 2026
- Updated
- Jun 21, 2026
- Vendor
- ImageMagick Studio LLC
- Product
- ImageMagick
- Classifications
- CWE-190, CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 21, 2026CVE publishedPublication date reported by the CVE source.
- Jun 21, 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=0 <6.9.13-40
- Affected versionversion=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
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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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