The Fritz box security gap of February concerned the users who had activated the remote access via port 443 and had a telephone function. This allowed fraudulent hackers to attack without notice and telephone fraud by means of automated remote calls and telephone “value-added services” – which the users then only noticed on their telephone bill. AVM had closed this gap with a security update already in February. A detailed update guide is provided by the manufacturer.
Also interesting is
Now AVM feels compelled to warn again this old gap. Obviously, there are still enough systems with the outdated firmware to make fraudulent the target target worthwhile. How AVM in "Neues von FRITZ!" , Which is only "a negligible proportion of all installed devices", but the amount of damage can be considerable in case of abuse.
According to AVM, users should definitely install the update, check the user interface for unknown IP telephones, remove them if necessary, and assign new passwords.
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