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

What is CVE-2025-62594?

CVE-2025-62594 is a medium-severity vulnerability in Imagemagick Imagemagick, published on 27 Oct 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-369, CWE-191, CWE-119

Which versions are affected by CVE-2025-62594?

24 open source packages ship an affected version, including Magick.NET-Q16-HDRI-OpenMP-arm64, Magick.NET-Q16-HDRI-OpenMP-x64 and Magick.NET-Q16-HDRI-arm64. It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2025-62594?

Upgrade to a fixed version.

Is CVE-2025-62594 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62594 exists.

Other vulnerabilities in Imagemagick Imagemagick

• CVE-2019-19952 Use after free in n/a Critical 9.8
• CVE-2018-16328 Null dereference in n/a Critical 9.8
• CVE-2018-16329 Null dereference in n/a Critical 9.8
• CVE-2017-18210 Null dereference in n/a Critical 9.8
• CVE-2017-14138 Denial of service in n/a Critical 9.8

All Imagemagick Imagemagick vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-62594, GHSA-wpp4-vqfq-v4hp, JLSEC-2026-928, MINI-wmcr-q98x-mqcv, OESA-2025-2587, OESA-2025-2589 and 7 more.