{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116723","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-26T20:23:34.016Z","datePublished":"2026-10-26T21:52:27.469Z","dateUpdated":"2026-10-26T21:52:27.469Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-26T21:52:27.469Z"},"datePublic":"2026-10-22T00:00:00.000Z","title":"FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used Field","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Stack-based Buffer Overflow","cweId":"CWE-121","type":"CWE"}]}],"affected":[{"vendor":"fltk","product":"fltk","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","versionType":"custom","lessThanOrEqual":"1.4.5"}],"packageURL":"pkg:github/fltk/fltk","repo":"https://github.com/fltk/fltk"}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fltk_project:fltk:*:*:*:*:*:*:*:*","versionEndIncluding":"1.4.5"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/fltk/fltk/issues/1632","tags":["issue-tracking"],"name":"GitHub Issue #1632"},{"url":"https://github.com/fltk/fltk","tags":["product"]},{"url":"https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1","tags":["patch"]},{"url":"https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265","tags":["technical-description"]},{"url":"https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow","tags":["third-party-advisory"]},{"name":"VulnCheck Advisory: FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used Field","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/fltk-through-1.4.5-stack-buffer-overflow-via-fl-bmp-image-colors-used-field"}],"credits":[{"lang":"en","value":"HaiND from the Post and Telecommunication Institute of Technology","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}