CVE-2026-109964 PUBLISHED

ImageMagick before 7.1.2-33 and 6.9.13-58 contains a heap buffer underwrite vulnerability in DecodeImage() in coders/pict.c on 32-bit builds due to pointer arithmetic overflow. Attackers can supply a crafted PICT file with maximized row, column and bytes-per-line values to bypass bounds checks and write up to 128 controlled bytes below the heap buffer, causing crashes or code execution.

• idoprog finder

• GitHub Security Advisory (GHSA-mqmp-r5jh-jx7w)
• https://github.com/ImageMagick/ImageMagick/commit/63dde0cf281383ab69432b88305f7dcd6a8ce900
• https://github.com/ImageMagick/ImageMagick6/commit/c18c5d5fb7f1d87ddbe0a02e9d1207c89b24588c
• https://github.com/ImageMagick/ImageMagick/blob/7.1.2-32/coders/pict.c#L503-L540
• https://github.com/ImageMagick/ImageMagick
• VulnCheck Advisory: ImageMagick before 7.1.2-33 and 6.9.13-58 Heap Buffer Underwrite in PICT Decoder

• Buffer Underwrite ('Buffer Underflow') CWE