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.
packetstormsecurity.com/files/131259/Ceragon-FibeAir-IP-10-SSH-Private-Key-Exposure.html
packetstormsecurity.com/files/131260/Ceragon-FibeAir-IP-10-SSH-Private-Key-Exposure.html
seclists.org/fulldisclosure/2015/Apr/3
www.securityfocus.com/bid/73696
gist.github.com/todb-r7/5d86ecc8118f9eeecc15
www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjs47SGp47UAhVF5iYKHYGLDQkQFggoMAE&url=https%3A%2F%2Fwww.rapid7.com%2Fdb%2Fmodules%2Fexploit%2Flinux%2Fssh%2Fceragon_fibeair_known_privkey&usg=AFQjCNFZiZcWj47cpqPX-AbfpsW0DL4yYw