This indicates an attack attempt against a Cryptographic Vulnerability in OpenSSL and Microsoft Windows.
The vulnerability is caused by a weak cryptographic primitive during negotiation phase between client and server. A remote attacker may be able to exploit this to break encryption keys and afterward decrypt traffics via man in the middle attack.
Any security primitives which support DH with 512 bits key
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue