CVE-2026-111124 — CFITSIO through 4.7.0 Heap Out-of-Bounds Read via Negative ZDITHER0 Seed
CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the imcompress.c unquantize helpers that allows attackers to read memory before the fits_rand_val…
Published: 2026-10-15 · CVSS: 6.9 · CVSS 4.0
CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the imcompress.c unquantize helpers that allows attackers to read memory before the fits_rand_value table via a zero or negative ZDITHER0 seed. Attackers can supply a crafted FITS file with a SUBTRACTIVE_DITHER_1 compressed image, read through fits_open_file() and fits_read_pix(), to cause crashes or leak heap contents in decoded pixels.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7