Nundina › Kalender entdecken › Versionssupport-Enddaten-Kalender › Firefox 158 end of lifeFirefox 158 end of life27. Oktober 2026Firefox 158 stops receiving security updates. Released 13 Oct 2026. Latest version 158.0.1 (20 Oct 2026). Source: endoflife.date.Versionssupport-Enddaten-KalenderMehr aus diesem Kalender