A “highly critical” ranked security patch has been released for Mozilla Firefox.

We are releasing this patch to CAT supported Tier 1/2 systems. Since this patch does not reboot your system, please make sure that you have restarted Firefox as soon as possible so that the patch is installed.

We recommend that Tier 3 users (self-supported) update Firefox asap. Checking on the version or restarting it is usually sufficient to force it to update itself.