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.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:HWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Oct 15, 2026
- Last modified
- Oct 21, 2026
- NVD status
- Analyzed