{"id":"CVE-2026-111125","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-111125","summary":"CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble","details":"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":"2026-10-15T18:57:22.035Z","modified":"2026-10-20T11:16:52.358639786Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111125.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111125"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-hcompress-input-nnybble"},{"type":"PACKAGE","url":"https://github.com/HEASARC/cfitsio"},{"type":"ARTICLE","url":"https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/fits_hdecompress.c#L2575-L2633"},{"type":"ARTICLE","url":"https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L6310-L6316"},{"type":"EVIDENCE","url":"https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T11:16:52.358639786Z"}}