Feathercoin release 0.17.0.1 has a vulnerable version of the dependency to the zeromq library and puts the users which have this feature enabled at risk for a remote-code-execution bug related to CVE-2019-6250 .
Feathercoin release 0.17.0.2 fixed this bug by using zeromq version 4.3.1
Users compiling their own version of Feathercoin-wallet or daemon and are using the depends folder of the code to compile the dependencies should update to version 0.17.0.2
Users using the pre-compiled binaries for Linux Windows and MAC should also update to 0.17.0.2
Users using the Linux PPA should have received a patch for zeromq through their Linux packet manager and therefore don’t need to take any actions.
Users not using the zeromq features don’t need to take any actions.
The pre-compiled binaries for version 0.17.0.2 are under compilation and will be available within the next days.
The Android wallet Feathercoin-Wallet-2 is obsolete and removed from Playstore.
Alternatives for Android are
the Coinomi Wallet
the Edge Wallet
Both are available on Playstore
How to move to a new wallet
Send all your coins from Android-Wallet-2 to another wallet you have access to.
Export your private keys from Android-wallet-2 and follow the process described here.