Mozilla Firefox Security Flaw In the Latest Update – Better to Downgrade Firefox For now

A few days ago the latest version of Firefox, Firefox 16 popped its head out from under the coders computers but quickly ran away shortly after. This was all down to a serious security flaw in the version that was spotted only after it was released into the wild. Users who downloaded the update thinking they were getting a shiny new version are sadly mistaken. All V16 users of Firefox are being told to downgrade to the safe but previous version of Firefox.

Mozilla Firefox Security FlawThe actual details of the flaw were found on the Mozilla Security Blog which states that the flaw was as follows. The vulnerability could allow a malicious site to potentially determine which websites users have visited and have access to the URL or URL parameters. The blog posting also added. At this time we have no indication that this vulnerability is currently being exploited in the wild.

Well, that must be good news for all those speedy Gonzalez’s who managed to download the update and those that have downloaded the update have been told that when the new and safe version of version 16 has been released, they will be automatically upgraded to it. The blog however does recommend that to be on the safe side you should downgrade to version 15.0.1.

Here at TNC we recommend you stay on the cautious side and downgrade as soon as you can. It is always better to be safe than sorry! Let us hear what you have to say about Mozilla Firefox Security Flaw through the comments.


The new and updated version of Firefox which fixes the security flaw has been released and is available for Windows, Mac, Linux and of course, Android users. This update is not susceptible to the flaw which blighted the last version.

For those that want to read more on the changes and find out what else was added. You can read the developer notes here from Mozillas official blog.

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