CVE-2026-54257
Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-120 |
| Vendor | electron |
| Product | electron |
| Published | Jun 23, 2026 |
| Last Updated | Jun 23, 2026 |
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Affected Versions
electron / electron
>= 42.3.1, < 42.3.3