On Ceragon Networks / Siklu Communication EtherHaul and MultiHaul Series microwave antennas before 2026-03-10, the rfpiped service on TCP port 555 allows unauthenticated file uploads to any writable location on the device. File upload packets use weak encryption (metadata only) with file contents transmitted in cleartext. No authentication or path validation is performed.

Ceragon FibeAir IP-10 have a default SSH public key in the authorized_keys file for the mateidu user, which allows remote attackers to obtain SSH access by leveraging knowledge of the private key.

ceragon

Ceragon FibeAir IP-10 wireless radios through 7.2.0 have a default password of mateidu for the mateidu account (a hidden user account established by the vendor). This account can be accessed via both the web interface and SSH. In the web interface, this simply grants an attacker read-only access to the device's settings. However, when using SSH, this gives an attacker access to a Linux shell. NOTE: the vendor has commented "The mateidu user is a known user, which is mentioned in the FibeAir IP-10 User Guide. Customers are instructed to change the mateidu user password. Changing the user password fully solves the vulnerability."