{"id":"CVE-2026-116724","title":"FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow","summary":"FLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dime…","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","cvssSource":"cna","cwe":["CWE-190"],"vendor":"fltk","product":"fltk","affected":["fltk <= 1.4.5"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T21:52:28.153Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116724","references":[{"url":"https://github.com/fltk/fltk/issues/1632","label":"GitHub Issue #1632"},{"url":"https://github.com/fltk/fltk"},{"url":"https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1"},{"url":"https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L281-L286"},{"url":"https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow"},{"url":"https://www.vulncheck.com/advisories/fltk-through-1.4.5-heap-buffer-overflow-via-fl-bmp-image-integer-overflow","label":"VulnCheck Advisory: FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow"}],"tags":["cve.org"],"epss":0.00147,"epssPercentile":0.03896,"ingestedAt":"2026-10-27T16:11:59.119Z","slug":"CVE-2026-116724","body":"## Overview\n\nFLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dimensions so row decoding writes file-derived data past the heap buffer, corrupting the application heap.\n\n## Affected\n\n- `fltk <= 1.4.5`\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,"exploitation":0,"ransomware":0},"changes":[]}