Electron 21 End of Life Date
Electron 21 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
Electron 21 was released on September 27, 2022 and support ended on April 4, 2023 — a supported lifespan of 6 months, in line with the 6 months median for Electron releases. The last patch it will ever receive is 21.4.4, published April 4, 2023 — on the day support ended. It has been without security patches for 3 years and 4 months. 19 newer Electron releases have shipped since.
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When Electron 21 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Electron 21 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to a supported version or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.