CVEvulnerability
CVE-2026-116723
8.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-10-26
- Last modified
- 2026-10-27
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.5 HIGH — 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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-121
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.
Related
Weakness · CWE (1)
- CWE-121 Stack-based Buffer Overflow weakness
References
- https://github.com/fltk/fltk github.com
- https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265 github.com
- https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1 github.com
- https://github.com/fltk/fltk/issues/1632 github.com
- https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow hackmd.io
- https://www.vulncheck.com/advisories/fltk-through-1.4.5-stack-buffer-overflow-via-fl-bmp-image-colors-used-field www.vulncheck.com