An SSL/TLS version offered by the server is outdated. The deprecated versions contain weak implementations that cannot be considered secure anymore. Make sure that your web server offers only recent and strong protocol versions.
There is no cipher order for HTTPS ciphers set or the cipher order includes an insecure cipher. This means, that an attacker could make use of an insecure SSL/TLS connection.
Your website produces an SSL/TLS warning. A warning from the SSL/TLS scanner does not indicate a direct vulnerability but highlights a potential issue that needs to be manually reviewed.
Security headers can effectively prevent a variety of hacking attempts. You should consider headers like Strict-Transport-Security, Content-Security-Policy, X-Frame-Options or X-XSS-Protection.
The server supports RC4 (Rivest Cipher 4), which is a cipher stream that is considered insecure due to multiple known vulnerabilities.
One of your used encryption algorithms has severe security issues.
The proprietary F5 TLS stack is vulnerable to ticketbleed. It exposes 31 bytes per request to the attacker and will ultimately invalidate the encryption.
DROWN (Decrypting RSA with Obsolete and Weakened encryption) is an attack on the old SSL v2 protocol version. Read here, how you can prevent SSL DROWN.
Short block sizes make the webserver vulnerable to hit the same hash for multiple inputs. By observing the data for a longer period of time, an attacker can recover secure HTTP cookies.
ROBOT (Return of Bleichenbacher’s Oracle Threat) is the reappearance of a vulnerability in SSL/TLS that appeared first in 1998. This article explains, how you can prevent SSL ROBOT.