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.
Severity (CVSS)
| Base score | 9.3 |
|---|---|
| Severity | Critical |
| Version | CVSS 4.0 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| Provided by | CNA |
Weaknesses
- CWE-120 — CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected products
| Vendor | Product | Versions |
|---|---|---|
| electron | electron | >= 42.3.1, < 42.3.3 |
References
- https://github.com/electron/electron/security/advisories/GHSA-q6m5-f73j-m9mc (x_refsource_CONFIRM)
Generated from the official CVE List on 24 Jun 2026 09:35 UTC.