BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as "ROBOT."
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.debian.org/security/2017/dsa-4072
https://security.netapp.com/advisory/ntap-20171222-0001/
https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c
http://www.securityfocus.com/bid/102195
http://www.kb.cert.org/vuls/id/144389
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00011.html