Nundina › Discover calendars › Version End-of-Life Dates calendar › OpenSSL 4.0 end of lifeOpenSSL 4.0 end of life14 May 2027OpenSSL 4.0 stops receiving security updates. Released 14 Apr 2026. Latest version 4.0.3 (29 Sep 2026). Source: endoflife.date.Version End-of-Life Dates calendarMore from this calendar