Medium severity6.1NVD Advisory· Published Oct 15, 2026
CVE-2026-111125
CVE-2026-111125
Description
CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.
Affected products
1Patches
Vulnerability mechanics
References
4- github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/fits_hdecompress.cnvd
- github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.cnvd
- hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-readnvd
- www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-hcompress-input-nnybblenvd
News mentions
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