CVE-2026-116724
CVE-2026-116724 · FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow
This page contains facts from public vulnerability sources. Check the original advisory before updating.
FLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dimensions so row decoding writes file-derived data past the heap buffer, corrupting the application heap.
CVSS 8.5 · High · EPSS 0.1%
- Published
- Updated
Stack: system
Affected products and versions
fltk
- Versions
- ≥ 0, ≤ 1.4.5: Affected (custom)
No fix published
fltk1.3 Debian:12
- Versions
- 1.3.11-1
- 1.3.11-2
- 1.3.11-3
- 1.3.8-5
- 1.3.8-6
- 1.3.8-6.1
- 1.3.8-6.1~exp1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
fltk1.3 Debian:13
- Versions
- 1.3.11-2
- 1.3.11-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
fltk1.3 Debian:14
- Versions
- 1.3.11-2
- 1.3.11-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
fltk1.4 Debian:13
- Versions
- 1.4.3-1
- 1.4.4-1
- 1.4.4-2
- 1.4.4-3
- 1.4.4-4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
fltk1.4 Debian:14
- Versions
- 1.4.3-1
- 1.4.4-1
- 1.4.4-2
- 1.4.4-3
- 1.4.4-4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- 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#L281-L286
- https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow
- https://www.vulncheck.com/advisories/fltk-through-1.4.5-heap-buffer-overflow-via-fl-bmp-image-integer-overflow
- https://nvd.nist.gov/vuln/detail/CVE-2026-116724