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CVE-2026-54257— Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow

EPSS 0.25% · P16
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I. Basic Information for CVE-2026-54257

Vulnerability Information
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Vulnerability Title
Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
electronelectron >= 42.3.1, < 42.3.3 -

II. Public POCs for CVE-2026-54257

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III. Intelligence Information for CVE-2026-54257

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Other References for CVE-2026-54257 (1)

IV. Related Vulnerabilities

Same product: electron
Same vendor: electron
Same weakness: CWE-120

V. Comments for CVE-2026-54257

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