Critical severity · published Jun 21, 2026
CVE-2026-56367
ImageMagick - Heap Out-of-Bounds Read in PSB RLE Decoding
9.1
CVSS
0.2%
EPSS
No
On KEV
Description
ImageMagick before 7.1.2-15 and 6.9.x before 6.9.13-40 contains an integer overflow in the PSB (PSD v2) RLE decoding path (ReadPSDChannelRLE in coders/psd.c) that causes a heap out-of-bounds read on 32-bit builds. Processing a crafted PSB file can lead to information disclosure or a crash.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IM
ImageMagick · ImageMagick
7.0.0 before 7.1.2-15; 6.9.0 before 6.9.13-40 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56367
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56367
Vendor Advisory
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-273h-m46v-96q4
Third Party Advisory
https://www.vulncheck.com/advisories/imagemagick-heap-out-of-bounds-read-in-psb-rle-decoding
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