{"id":"CVE-2026-116723","published":"2026-10-26T22:16:55.923","lastModified":"2026-10-26T22:16:55.923","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.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-121"],"vendors":[],"products":[],"references":[{"url":"https://github.com/fltk/fltk","tags":[]},{"url":"https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265","tags":[]},{"url":"https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1","tags":[]},{"url":"https://github.com/fltk/fltk/issues/1632","tags":[]},{"url":"https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow","tags":[]},{"url":"https://www.vulncheck.com/advisories/fltk-through-1.4.5-stack-buffer-overflow-via-fl-bmp-image-colors-used-field","tags":[]}],"exploitRefs":[{"url":"https://github.com/fltk/fltk","tags":[]},{"url":"https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265","tags":[]},{"url":"https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1","tags":[]},{"url":"https://github.com/fltk/fltk/issues/1632","tags":[]}],"hasPoc":true,"ai":null}