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.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-q6m5-f73j-m9mc | Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow |
References
History
Tue, 23 Jun 2026 18:30:00 +0000
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ssvc
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Tue, 23 Jun 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow | |
| Weaknesses | CWE-120 | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-23T17:47:47.594Z
Reserved: 2026-06-12T17:13:32.278Z
Link: CVE-2026-54257
Updated: 2026-06-23T17:47:41.615Z
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OpenCVE Enrichment
No data.
Weaknesses
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CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Github GHSA