Secure Elements Class 5 AVR (aka C5 EVM) before 2.8.1 uses the same invariant RSA key for all installations, which allows remote attackers with the key to decrypt communications.

Unspecified vulnerability in Secure Elements Class 5 AVR client and server (aka C5 EVM) before 2.8.1 allows authenticated attackers to overwrite arbitrary files (1) on a server during an update or (2) on a client via modified pathnames, possibly due to a directory traversal issue.

Secure Elements Class 5 AVR server (aka C5 EVM) before 2.8.1 allows remote attackers to cause an unspecified denial of service via a large number of forged client registration messages.

Secure Elements Class 5 AVR server (aka C5 EVM) before 2.8.1 uses a hard-coded user ID and password, which allows remote attackers to gain access to the server.