wolfSSL prior to version 3.12.2 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 wolfSSL application. This vulnerability is referred to as "ROBOT."
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-002.txt
http://www.kb.cert.org/vuls/id/144389
http://www.securityfocus.com/bid/102174
https://cert-portal.siemens.com/productcert/pdf/ssa-464260.pdf
Source: MITRE
Published: 2017-12-13
Updated: 2019-10-09
Type: CWE-203
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 2.2
Severity: MEDIUM