CVE-2026-115504 CFITSIO - Remote Code Execution

CFITSIO through 4.7.0 contains a buffer overflow caused by trusting attacker-controlled heap descriptor lengths in ffgcls2() in getcols.c, letting attackers execute arbitrary code by supplying crafted FITS files, exploit requires crafted FITS file.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-787

Vendor fix

Update to the latest version beyond 4.7.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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