CVE-2025-55160 ImageMagick Undefined Behavior (function-type-mismatch) in CloneSplayTree

What is CVE-2025-55160?

CVE-2025-55160 is a medium-severity denial of service vulnerability in Imagemagick Imagemagick, published on 13 Aug 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 free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.

Weakness: CWE-758

Which versions are affected by CVE-2025-55160?

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

Products include Imagemagick Imagemagick.

How do I fix CVE-2025-55160?

Upgrade Magick.NET-Q16-AnyCPU to 14.8.0 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-55160 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55160 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 CLSA-2025-1763043157, CLSA-2026-1768313573, CLSA-2026-1768589696, DEBIAN-CVE-2025-55160, GHSA-6hgw-6x87-578x, JLSEC-2026-922 and 3 more.