en	[[!meta title="Tails 6.15.1"]]

en	[[!meta date="Tue, 20 May 2025 00:00:00 +0000"]]

en	[[!pagetemplate template="news.tmpl"]]

en	[[!tag announce]]

en	This release is an emergency release to fix important security vulnerabilities in Tor Browser.

en	Changes and updates

en	Update *Tor Browser* to [14.5.2](https://blog.torproject.org/new-release-tor-browser-1452), which fixes [Mozilla Foundation Security Advisory 2025-37](https://www.mozilla.org/en-US/security/advisories/mfsa2025-37/). These vulnerabilities allow an attacker to perform an out-of-bounds read or write on a JavaScript object, but [don't allow breaking out of the Firefox sandbox](https://blog.mozilla.org/security/2025/05/17/firefox-security-response-to-pwn2own-2025/).

en	Update *Thunderbird* to [128.10.1](https://www.thunderbird.net/en-US/thunderbird/128.10.1esr/releasenotes/).

en	Remove the *Tor Browser* and *Tor Browser (persistent)* folders: they are not necessary anymore, thanks to the more flexible confinement of *Tor Browser* we introduced in [[Tails 6.14.1|news/version_6.14.1]]. ([[!tails_ticket 15028]])

en	Fixed problems

en	Fix the *Unsafe Browser* appearing in the window list with the *Tor Browser* icon. ([[!tails_ticket 20934]])

en	Make reporting an error using *WhisperBack* more robust. ([[!tails_ticket 20921]])

en	Fix *USB tethering*. ([[!tails_ticket 20940]])

en	For more details, read our [[!tails_gitweb debian/changelog desc="changelog"]].

en	Get Tails 6.15.1

en	To upgrade your Tails USB stick and keep your Persistent Storage

en	Automatic upgrades are available from Tails 6.0 or later to 6.15.1.

en	If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a [[manual upgrade|doc/upgrade/#manual]].

en	To install Tails 6.15.1 on a new USB stick

en	Follow our installation instructions:

en	[[Install from Windows|install/windows]]

en	[[Install from macOS|install/mac]]

en	[[Install from Linux|install/linux]]

en	[[Install from Debian or Ubuntu using the command line and GnuPG|install/expert]]

en	The Persistent Storage on the USB stick will be lost if you install instead of upgrading.

en	To download only

en	If you don't need installation or upgrade instructions, you can download Tails 6.15.1 directly:

en	[[For USB sticks (USB image)|install/download]]

en	[[For DVDs and virtual machines (ISO image)|install/download-iso]]