CVE-2026-56362

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.

CVSS 4.0

2.1CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

4.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L

EPSS

0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-29)

CWE

CWE-125

Published

2026-07-08

Modified

2026-10-29

Record from

the NVD, synced 2026-10-29

Affected

• imagemagick:imagemagick

References

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gq5v-qf8q-fp77
• https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-read-in-getpixelindex-via-openpixelcache-metadata-desynchronization

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