Medium 4.7Published Oct 27, 2025

CVE-2025-62594ImageMagick CLAHE : Unsigned underflow and division-by-zero lead to OOB pointer arithmetic and process crash (DoS)

Updated under an hour ago (Oct 28, 2026, 6:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

ImageMagick is a software suite to create, edit, compose, or convert bitmap images. ImageMagick versions prior to 7.1.2-8 are vulnerable to denial-of-service due to unsigned integer underflow and division-by-zero in the CLAHEImage function. When tile width or height is zero, unsigned underflow occurs in pointer arithmetic, leading to out-of-bounds memory access, and division-by-zero causes immediate crashes. This issue has been patched in version 7.1.2-8.

CVSS: 4.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-119, CWE-369, CWE-191
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 27, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ImageMagick ImageMagick imagemagick:imagemagick (from the name)	before 7.1.2-8	CNA record
imagemagick imagemagick imagemagick:imagemagick	before 7.1.2-8	NVD

References

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-wpp4-vqfq-v4hp	x-refsource-confirm, exploit, vendor-advisory
https://github.com/ImageMagick/ImageMagick/commit/7b47fe369eda90483402fcd3d78fa4167d3bb129	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.