Recent updates to Apple Safari and Google Chrome made big headlines because they fixed mysterious zero-day exploits that were already being used in the wild.

But this week also saw the latest four-weekly Firefox update, which dropped as usual on Tuesday, four weeks after the last scheduled full-version-number-increment release.

We haven’t written about this update until now because, well, because the good news is…

…that although there were a couple of intriguing and important fixes with a level of High, there weren’t any zero-days, or even any Critical bugs this month.