CVE-2026-111125CWE-125

CVE-2026-111125

Medium · published October 15, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
7.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00178 · 7.0th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-15T23:17Z
Affected products (1)
ProductVersionsFixed in
nasa/cfitsio≤ 4.7.0—
References (5)
https://github.com/HEASARC/cfitsio · [email protected]https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/fits_hdecompress.c#L2575-L2633 · [email protected]https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L6310-L6316 · [email protected]https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read · [email protected]https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-hcompress-input-nnybble · [email protected]
EPSS history
Timeline
  • 17 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 15 OCT 18:57Z
    CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble
    cvelistv5
  • 15 OCT 18:57Z
    CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble
    cvelistv5