Mozilla on Wednesday patched five vulnerabilities, three of them critical, in older editions of Firefox. Mozilla extended the support life of Firefox 3.0 by at least one more month. Mozilla has discontinued security updates for a browser approximately six months after the release of a newer edition. The last time that Mozilla issued a security update for Firefox was Jan. 5, when it fixed a flaw in the browser’s upgrade mechanism and patched a bug that programmers inadvertently introduced the month before. Mozilla did not immediately respond to questions about when it plans to officially retire the version.”]
Source: https://www.csoonline.com/article/2124834/mozilla-patches-critical-firefox-bugs.html