Mozilla Foundation released Firefox 220.127.116.11, which fixes eight security problems. Three of the security problems are rated critical, two are rated high, one is rated moderate, and two are rated as low risks.
The most severe problems involve issues remote code execution when Firefox is launched from within Internet Explorer, privilege escalation, and memory corruption. A complete list of details can be found in the release notes for Firefox 18.104.22.168.
The foundation strongly recommends that everyone install this latest release, and since Firefox 1.5.x is no longer support the foundation also recommends that users of that branch upgrade to 22.214.171.124.