CVE-2026-116723EUVD-2026-110504GHSA-64V9-4HFH-JMVH
FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used Field
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fix or patch referenced
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The FLTK graphical user interface library (through version 1.4.5, but version numbers omitted here) is affected when it loads BMP or ICO image files. A specially crafted image can overflow a stack buffer, which could crash applications or potentially allow an attacker to run arbitrary code.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- fltk fltk
through 1.4.5