Skip to main content
HIGH

CVE-2026-115504

CFITSIO through 4.7.0 Out-of-Bounds Write via ffgcls2 in getcols.c

CVSS v3

7.8

HIGH

EPSS Score

—

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for cfitsio.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-115504 Red Hat Product Security3 known affected

    cfitsio: cfitsio: arbitrary code execution via crafted FITS file

    cfitsio-devel as a component of Red Hat Enterprise Linux 10 · cfitsio.src as a component of Red Hat Enterprise Linux 10 · cfitsio.src as a component of Red Hat Enterprise Linux AI (RHEL AI) 3

Full record on NVD

Description

CFITSIO through 4.7.0 contains an out-of-bounds write vulnerability in ffgcls2() in getcols.c that trusts attacker-controlled heap descriptor lengths for variable-length string columns. Attackers can supply a crafted FITS file that overflows a fixed 28,800-byte stack buffer and the caller's string array, enabling arbitrary code execution.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-10-22
Last Modified
2026-10-22

Frequently asked questions

What is CVE-2026-115504?

CFITSIO through 4.7.0 contains an out-of-bounds write vulnerability in ffgcls2() in getcols.c that trusts attacker-controlled heap descriptor lengths for variable-length string columns. Attackers can supply a crafted FITS file that overflows a fixed 28,800-byte stack buffer and the caller's string array, enabling arbitrary code execution.

Is CVE-2026-115504 actively exploited?

Active exploitation of CVE-2026-115504 has not been confirmed.

What is the CVSS score for CVE-2026-115504?

CVE-2026-115504 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Running cfitsio? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this productCISA KEV additions, October 2026Search CVEs

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database