What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-27 · updated 2026-10-19
• Weakness: CWE-119

Description

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.

Affected products

• ImageMagick: before 7.1.2-8 — fixed in 7.1.2-8

How to fix

Upgrade to a fixed version: ImageMagick 7.1.2-8. Check the vendor advisory for mitigations.

References

• https://github.com/ImageMagick/ImageMagick/commit/7b47fe369eda90483402fcd3d78fa4167d3bb129
• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-wpp4-vqfq-v4hp

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