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CVE-2026-111124

7.1, high

HEASARC cfitsio Out-of-Bounds Read Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.1, high high CVSS v3.1
EPSS, next 30 days
0.1% higher than 2.2% of scored CVEs
Exploitation
Exploit code published
Published
15 Oct 20266 days ago

Description

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.

Details

Vendor
HEASARC
Product
cfitsio
Weakness
CWE-125 (opens in a new tab)
Status
Analyzed
Updated
20 Oct 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

References 5

Exploit code 1

Advisories 1

Other references 3

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other HEASARC CVEs

Every HEASARC CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-111125 HEASARC cfitsio Out-of-Bounds Read Vulnerability EPSS 0.1% 7.1, high

Beyond this page

Is CVE-2026-111124 in your network?

This page tells you how dangerous CVE-2026-111124 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 21 Oct 2026, not the live upstream state.