CVSS Vector: AV:N/AC:M/AU:N/C:P/I:P/A:P
The server is vulnerable to CCS Injections. Malicious intermediate nodes can intercept encrypted data and decrypt it by forcing SSL clients to use a weak key.
Follow the guide to prevent CCS injections:
Update OpenSSL to the latest version. The following versions are known to prevent CCS injections:
apt-get update; apt-get upgrade # Debian / Ubuntu
yum update # RHeL / CentOS
pacman -Syu # Arch Linux