A denial of service vulnerability exists in the Windows implementation of Transport Layer Security (TLS) when it improperly handles certain key exchanges, aka 'Microsoft Windows Transport Layer Security Denial of Service Vulnerability'.
https://www.tenable.com/blog/microsoft-s-may-2020-patch-tuesday-addresses-111-cves
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1118