Vulnerability 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.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-54257?
CVE-2026-54257 is a documented vulnerability. 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 b...
How severe is CVE-2026-54257?
CVSS scoring is not yet available for CVE-2026-54257. Check NVD for updates.
Is there a patch for CVE-2026-54257?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.