{"id":"CVE-2026-116723","revision":"ac57d5d1acc5412aa6a865ffbdca2906","records":[{"revision":"ac57d5d1acc5412aa6a865ffbdca2906","observedAt":"2026-10-26T22:35:30.956+00:00","statement":{"source":"cve-program","id":"CVE-2026-116723","aliases":[],"title":"FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used Field","description":"FLTK through 1.4.5 contains a stack-based buffer overflow vulnerability in Fl_BMP_Image::load_bmp_() that allows attackers to corrupt stack memory by supplying an oversized BMP colors_used field. Attackers can craft BMP or ICO files with colors_used above 256 to overflow the 768-byte colormap array, causing crashes or potential code execution.","state":0,"publishedAt":"2026-10-26T21:52:27.469+00:00","modifiedAt":"2026-10-26T21:52:27.469+00:00","affected":[{"ecosystem":"Vendor product","name":"fltk","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"fltk\",\n                    \"product\": \"fltk\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\",\n                            \"lessThanOrEqual\": \"1.4.5\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/fltk/fltk\",\n                    \"repo\": \"https://github.com/fltk/fltk\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.5,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://github.com/fltk/fltk/issues/1632","https://github.com/fltk/fltk","https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1","https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265","https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow","https://www.vulncheck.com/advisories/fltk-through-1.4.5-stack-buffer-overflow-via-fl-bmp-image-colors-used-field"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116723","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116723","identifiers":["CVE-2026-116723"]},"retained":false,"historicalAffected":[]}],"coverage":[]}