{"id":"CVE-2026-66757","title":"Gimp: signed integer overflow in file-sgi (sgi-lib) causes the plugin to crash on rle sgi images","summary":"A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted f…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-190"],"vendor":"GNOME","product":"gimp","affected":["gimp (all versions)","gimp","gimp (all versions)","gimp:2.8/gimp (all versions)","gimp (all versions)"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-27T20:21:10.980868Z"},"exploitAvailable":true,"published":"2026-07-27","updated":"2026-11-05","sourceUpdated":"2026-11-05T22:13:18.535Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66757","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-66757"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507465","label":"RHBZ#2507465"},{"url":"https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494"}],"tags":["cve.org","exploit-available"],"epss":0.00232,"epssPercentile":0.14194,"ingestedAt":"2026-11-05T23:41:31.952Z","slug":"CVE-2026-66757","body":"## Overview\n\nA flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service.\n\n## Affected\n\n- `gimp (all versions)`\n- `gimp`\n- `gimp (all versions)`\n- `gimp:2.8/gimp (all versions)`\n- `gimp (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nTo mitigate this vulnerability, do not open SGI files from untrusted sources with GIMP.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}