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CVE-2026-115504

CFITSIO through 4.7.0 Out-of-Bounds Write via ffgcls2 in getcols.c

CFITSIO through 4.7.0 contains an out-of-bounds write vulnerability in ffgcls2() in getcols.c that trusts attacker-controlled heap descriptor lengths for variable-length string columns. Attackers can supply a crafted FITS file that overflows a fixed 28,800-byte stack buffer and the caller's string array, enabling arbitrary code execution.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Heasarc
Products
Cfitsio
CVE-2026-111125

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.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Heasarc Nasa
Products
Cfitsio Cfitsio