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Back to active CVEs
High · CVSS 8.5CVE-2026-116724

FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer OverflowCVE-2026-116724

Answer in brief

CVE-2026-116724 records a High severity (CVSS 8.5) vulnerability in FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow. The current sources do not mark it as known exploited. The current feed maps fltk/fltk (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 26, 2026Updated Oct 26, 2026Source checked Oct 26, 2026First seen by HOL Oct 26, 2026Material review Oct 26, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps fltk/fltk (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
fltk/fltkgeneric>=0 <=1.4.5Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for fltk/fltk.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 26, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencehackmd.io
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used FieldSame fltk/fltk package
  • compress zstd: Panic on two-block framesAlso CWE-190
  • flatcc through 0.6.4 Out-of-Bounds Read via verifier check_headerAlso CWE-190

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-190
Source
CVE List V5
Source checked
Oct 26, 2026
References
6 linked sources
Open source record