CVE-2026-111124
highCFITSIO 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…
Vendor / product: Nasa — cfitsio
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.
CVSS
7.1
7.1 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-15 19:17
Modified: 2026-10-26 16:17
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
nasa / cfitsio ≤4.7.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read
Vendor advisory: https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read
Patch / mitigation: https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read
Patch / mitigation: https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read
References
- https://github.com/HEASARC/cfitsio disclosure@vulncheck.com
- https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompres... disclosure@vulncheck.com
- https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompres... disclosure@vulncheck.com
- https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-neg... disclosure@vulncheck.com
- https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗