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.
History

Wed, 21 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Heasarc
Heasarc cfitsio
Vendors & Products Heasarc
Heasarc cfitsio

Wed, 21 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Nasa
Nasa cfitsio
CPEs cpe:2.3:a:nasa:cfitsio:*:*:*:*:*:*:*:*
Vendors & Products Nasa
Nasa cfitsio

Fri, 16 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 15 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-15T18:57:22.035Z

Updated: 2026-10-21T01:15:29.785Z

Reserved: 2026-10-15T17:03:51.157Z

Link: CVE-2026-111125

cve-icon Vulnrichment

Updated: 2026-10-21T01:15:20.786Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-15T19:17:25.780

Modified: 2026-10-21T02:17:03.647

Link: CVE-2026-111125

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-15T18:57:22Z

Links: CVE-2026-111125 - Bugzilla