High severity · published Jun 21, 2026
CVE-2026-56378
ImageMagick - Heap Out-of-Bounds Read in PCD Decoder
8.2
CVSS
0.4%
EPSS
No
On KEV
Description
ImageMagick before 7.1.2-15 (and 6.x before 6.9.13-40) contains a heap out-of-bounds read in the PCD coder's DecodeImage loop. A crafted PCD file can trigger a one-byte heap out-of-bounds read during image decoding, resulting in denial of service and potential disclosure of an adjacent heap byte.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IM
ImageMagick · ImageMagick
before 7.1.2-15; before 6.9.13-40 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56378
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56378
Third Party Advisory
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-wgxp-q8xq-wpp9
Third Party Advisory
https://www.vulncheck.com/advisories/imagemagick-heap-out-of-bounds-read-in-pcd-decoder
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