CVE-2026-116724
FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-190 |
| Vendor | fltk |
| Product | fltk |
| Published | Oct 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
fltk / fltk
0 ≤ 1.4.5
References
github.com: https://github.com/fltk/fltk/issues/1632 github.com: https://github.com/fltk/fltk github.com: https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1 github.com: https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L281-L286 hackmd.io: https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow vulncheck.com: https://www.vulncheck.com/advisories/fltk-through-1.4.5-heap-buffer-overflow-via-fl-bmp-image-integer-overflow
Credits
HaiND from the Post and Telecommunication Institute of Technology