Executive brief
Electron, a widely used framework for building desktop applications like Slack and Discord, contains a flaw in how it handles data memory. This issue can cause applications to crash or behave unpredictably, potentially allowing attackers to disrupt services or gain unauthorized access to data. Users should ensure their desktop applications are updated to versions using the patched framework.
Technical details
A vulnerability exists in Electron's implementation of the Node.js Buffer API between versions 42.3.1 and 42.3.2. The root cause is incorrect byte length calculations during memory allocation, leading to classic buffer overflows or underflows (CWE-120) on the heap. An attacker can potentially exploit this over a network without authentication to cause a Denial of Service (crash) or achieve remote code execution through memory corruption. The issue is resolved in Electron version 42.3.3.
Affected products
- Electron Electron 42.3.1 - 42.3.2
Timeline
- 2026-06-03: advisory: GitHub advisory published by Electron maintainers
- 2026-06-23: disclosed: CVE published to NVD