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cfitsio vulnerabilities

Vulnerabilities published for cfitsio in the last 30 days: 2. Listed in the KEV catalogue: 0.

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Vulnerabilities: 2

  1. CVE-2026-111125

    Medium · CVSS 6.9EPSS 0.18%No fix published

    CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble

    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.

    Published Updated
  2. CVE-2026-111124

    Medium · CVSS 6.9EPSS 0.17%No fix published

    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_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.

    Published Updated

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