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Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

31.5.2

Firefox ESR

March 20, 2015

Version 31.5.2, first offered to ESR channel users on March 20, 2015

Fixed

  • Security fixes for issues disclosed at HP Zero Day Initiative's Pwn2Own contest