CVE-2026-116724

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/fltk/fltk
https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L281-L286
https://github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1
https://github.com/fltk/fltk/issues/1632
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

Configurations

No configuration.

History

26 Oct 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 22:16

Updated : 2026-10-31 02:17

NVD link : CVE-2026-116724

Mitre link : CVE-2026-116724

CVE.ORG link : CVE-2026-116724

JSON object : View

Products Affected

No product.

CWE

CWE-190

Integer Overflow or Wraparound

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