VULNERABILITY INTELLIGENCE

CVE-2026-54257

EPSS probability0.43%
CISA KEVNot currently listed
Published2026-06-23
Last modified2026-06-25

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.1 until 42.3.3, Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow. Most apps will crash and some may perform incorrect buffer allocations in the Node.js Buffer API resulting in unexpected truncation or allocation. This vulnerability is fixed in 42.3.3.

Weakness classification

  • security-advisories@github.com: CWE-120

Primary references