{"id":"CVE-2026-116723","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-116723","generatedAt":"2026-10-28T03:41:49.750Z","title":"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.","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.","published":"2026-10-26T22:16:56.000Z","lastModified":"2026-10-27T15:55:51.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.5,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-121"],"affected":[],"epss":{"score":0.0016,"percentile":0.05062,"date":"2026-10-27","history":[{"date":"2026-10-27","score":0.0016,"percentile":0.05062}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-26T22:16:56.000Z","detail":{"score":"8.5","severity":"HIGH","publishedAt":"2026-10-26T22:16:55.923Z"},"summary":"New CVE, high severity (CVSS 8.5)."}],"references":[{"url":"https://github.com/fltk/fltk","source":"disclosure@vulncheck.com"},{"url":"https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265","source":"disclosure@vulncheck.com"},{"url":"https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1","source":"disclosure@vulncheck.com"},{"url":"https://github.com/fltk/fltk/issues/1632","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/fltk-through-1.4.5-stack-buffer-overflow-via-fl-bmp-image-colors-used-field","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-116723","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}