CVE-2026-55059

OpenEXR (the reference implementation for the EXR deep image format) versions prior to 3.2.10, 3.3.12, and 3.4.13 contain a heap out-of-bounds write in Imf_4_0::SampleCountChannel::set(). The root cause is that the row-based sample-count setter computes the target Y coordinate using dataWindow.mi...