{"id":"CVE-2026-66758","title":"A flaw was found in the file-fits plugin in GIMP","summary":"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, the…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-190"],"vendor":"gimp","product":"gimp","affected":["gimp = 3.0.8","gimp = 3.2.4","enterprise_linux = 6.0","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0"],"published":"2026-07-27","updated":"2026-09-30","sourceUpdated":"2026-09-30T15:22:33.133","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66758","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:50817","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:62507","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:73768","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-66758","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507475","label":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/gimp/-/issues/16528","label":"secalert@redhat.com"}],"tags":["nvd","cve.org"],"epss":0.0036,"epssPercentile":0.27336,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-07-28T03:56:52.707001Z"},"ingestedAt":"2026-09-30T15:07:05.380Z","slug":"CVE-2026-66758","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `gimp = 3.0.8`\n- `gimp = 3.2.4`\n- `enterprise_linux = 6.0`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}