CVE-2026-25898

The record

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, the UIL and XPM image encoder do not validate the pixel index value returned by `GetPixelIndex()` before using it as an array subscript. In HDRI builds, `Quantum` is a floating-point type, so pixel index values can be negative. An attacker can craft an image with negative pixel index values to trigger a global buffer overflow read during conversion, leading to information disclosure or a process crash. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

Affected packages

Related vulnerabilities

• GHSA-vpxv-r9pg-7gpr ImageMagick has Global Buffer Overflow (OOB Read) via Negative Pixel Index in UIL and XPM… Same vulnerability
• CVE-2026-27799 ImageMagick is free and open-source software used for editing and manipulating digital… Also affects Magick.NET-Q16-AnyCPU
• CVE-2026-27798 ImageMagick is free and open-source software used for editing and manipulating digital… Also affects Magick.NET-Q16-AnyCPU
• GHSA-r99p-5442-q2x2 ImageMagick has a heap Buffer Over-read in its DJVU image format handler Also affects Magick.NET-Q16-AnyCPU
• GHSA-qpgx-jfcq-r59f ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images Also affects Magick.NET-Q16-AnyCPU
• GHSA-gq5v-qf8q-fp77 ImageMagick: Heap-based Buffer Overflow in GetPixelIndex due to metadata-cache… Also affects Magick.NET-Q16-AnyCPU
• GHSA-wfx3-6g53-9fgc ImageMagick: Memory Leak in multiple coders that write raw pixel data Also affects Magick.NET-Q16-AnyCPU
• GHSA-3q5f-gmjc-38r8 ImageMagick: Memory leak in coders/txt.c without freetype Also affects Magick.NET-Q16-AnyCPU