VULNERABILITY INTELLIGENCE

CVE-2026-66758

CVSS score7.8 HIGH
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-07-27
Last modified2026-10-12
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.

Weakness classification

  • secalert@redhat.com: CWE-190

Primary references